Ratio-Proportion MCQs
Showing 50 questions (Total: 917)
একটি দ্রব্য ২৫% লাভে বিক্রয় করা হলে, বিক্রয়মূল্য ও ক্রয়মূল্যের অনুপাত নিচের কোনটি?
Correct Answer:
ক: ৫ : ৪
Explanation:
একটি দ্রব্য ২৫% লাভে বিক্রয় করা হলে, বিক্রয়মূল্য ও ক্রয়মূল্যের অনুপাত নিচের কোনটি? সঠিক উত্তর ৫ : ৪ ক্রয়মূল্য ১০০ টাকা হলে,২৫% লাভে বিক্রয়মূল্য = ১০০+২৫ = ১২৫ টাকাসুতরাং বিক্রয়মূল্য : ক্রয়মূল্য = ১২৫ : ১০০ = ৫ : ৪ ( ২৫ দ্বারা কাটা)
একটি রাশি অপর রাশির ৬৪% হলে, রাশি দু’টির অনুপাত কত?
Correct Answer:
খ: ১৬ : ২৫
Explanation:
একটি রাশি অপর রাশির ৬৪% হলে, রাশি দু’টির অনুপাত কত? সঠিক উত্তর ১৬ : ২৫ ধরি, একটি রাশি = অপর রাশি = এর ৬৪%। ⇒x = ৬৪১০০⇒x = ১৬২৫∴x = ১৬২৫ = ১৬∶২৫
কোনো ত্রিভুজের বাহুগুলোর অনুপাত নিম্নের কোনটি হলে, একটি সমকোণী ত্রিভুজ আঁকা যাবে?
Correct Answer:
খ: ৩ : ৪ : ৫
A truck covers a distance of 550 metres in 1 minute where as a bus covers a distance of 33 kms in 45 minutes. The ratio of their speeds is :
Correct Answer:
A: 3 : 4
Explanation:
A truck covers a distance of 550 metres in 1 minute where as a bus covers a distance of 33 kms in 45 minutes. The ratio of their speeds is : Correct Answer 3 : 4 In the case of truck S = 550m/60 = 9.166 = 9 m/sec In the case of Bus S = ( 33×1000)m /( 45×60)sec = 12 m/sec So the speed ratio of truck : Bus = 9 : 12 = 3 : 4
Akash bought two varieties of rice, costing Tk. 50/kg each, and Tk. 60/kg each, and mixed them in some ratio. Then he sold the mixture at Tk. 70/kg. making a profit of 20%. What was the ratio of the mixture?
Correct Answer:
B: 1 : 5
Explanation:
Akash bought two varieties of rice, costing Tk. 50/kg each, and Tk. 60/kg each, and mixed them in some ratio. Then he sold the mixture at Tk. 70/kg. making a profit of 20%. What was the ratio of the mixture? Correct Answer 1 : 5 Let, he bought x kg at 50/kg rate y kg at 60/kg rate So, the cost price = 50x + 60y and sell price = 70 ( x + y) Now, the profit was 20% if cost price is 100 selling is 120 tk if cost price (50x + 60y) selling is 120( 50x + 60y)/100 120(50x + 60y)/100 = 70(x + y) 60x + 72y = 70x + 70y 2y = 10x 5x = y x/y = 1/5 x : y = 1 : 5
যদি কিউব-ক এর সাইড ও কিউব-খ এর সাইডের অনুপাত ২ : ১, তা হলে এর তল দুটির অনুপাত কত?
Correct Answer:
গ: ৪ : ১
৫:১৮, ৭:২ এবং ৩:৬ এর মিশ্র অনুপাত কত?
Correct Answer:
গ: ৩৫:৭২
Explanation:
৫:১৮, ৭:২ এবং ৩:৬ এর মিশ্র অনুপাত কত? সঠিক উত্তর ৩৫:৭২ অনুপাত তিনটি হল যথাক্রমে = ৫:১৮,৭:২,৩:৬ অনুপাত গুলোর প্রথম অংশের লসাগু = ১০৫ ২য় অংশের ল সা গু = ৭২ নির্ণেয় মিশ্র অনুপাত = ১০৫ :৭২
A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined them after six months with an amount equal to that of B. In what proportion should the profit at the end of one year be distributed among A, B and C?
Correct Answer:
C: 6 : 10 : 5
Explanation:
A and B started a partnership business investing some amount in the ratio of 3 : 5. C joined them after six months with an amount equal to that of B. In what proportion should the profit at the end of one year be distributed among A, B and C? Correct Answer 6 : 10 : 5 Hints: Let the initial investments of A and B be 3x and 5x A : B : C = (3x × 12) : ( 5x × 12) : ( 5x × 6) = 36 : 60 : 30 = 6 : 10 : 5
If the income of A is 10% more than that of B and the income of B is 20% less than that of C, then the income of A, B and C respectively are in the ratio
Correct Answer:
B: 22 : 20 : 25
Explanation:
If the income of A is 10% more than that of B and the income of B is 20% less than that of C, then the income of A, B and C respectively are in the ratio Correct Answer 22 : 20 : 25 ধরি, C এর ইনকাম 100 টাকা B এর ইনকাম ( 100 - 100 এর 20%) = 80 টাকা A এর ইনকাম ( 80 + 80 এর 10 %) = 88 টাকা। A : B : C = 88 : 80 : 100 = 22 : 20 : 25
In what ratio must a grocer mix two varieties of tea worth TK. 60 a kg and TK. 65 a kg so that by selling the mixture at TK. 68.20 a kg he may gain 10% ?
Correct Answer:
A: 3:2
Explanation:
In what ratio must a grocer mix two varieties of tea worth TK. 60 a kg and TK. 65 a kg so that by selling the mixture at TK. 68.20 a kg he may gain 10% ? Correct Answer 3:2 Hints : Let he mixes the tea in ratio x:y Therefore the cist price = 60x + 65y selling price = 68.20(x + y) we know, profit = sells price - cost price 10% of (60x + 65y) = 68.20(x + y) - (60x + 65y) 10(60x + 65y) / 100 = 68.20x + 68.20y - 60x - 65y 6x + 6.5y = 820x + 3.20 y 2.2x = 3.3 y x/y = 3/2 x:y = 3:2
Two whole numbers whose sum is 72 cannot be in the ratio :
Correct Answer:
C: 3 : 4
Explanation:
Two whole numbers whose sum is 72 cannot be in the ratio : Correct Answer 3 : 4 A. 5 : 7 5x + 7x = 72 12x = 72 x = 6 B. 3 : 5 3x + 5x = 72 x = 9 C. 3 : 4 3x + 4x = 72 x = 72/7 D. 4:5 4x + 5x = 72 x = 8
In a school, 10% of the boys are some in number as 1/4th of the girls. What is the ratio of boys to girls in that school ?
Correct Answer:
D: 5:2
Explanation:
In a school, 10% of the boys are some in number as 1/4th of the girls. What is the ratio of boys to girls in that school ? Correct Answer 5:2 Hints : 10% of boy = 10/100 of boy = 1/4 of girl boy/girl = 100/10 × 4 = 5/2 = 5 : 2
The ratio of the father's age to his son's age is 7:3. The product of their ages is 756. The ratio of their ages after 6 years will be :
Correct Answer:
A: 2:1
Explanation:
The ratio of the father's age to his son's age is 7:3. The product of their ages is 756. The ratio of their ages after 6 years will be : Correct Answer 2:1 Hints : Let their age be 7x and 3x Now, 7x × 3x = 756 x2 = 756/7 × 3 = 36 x = 6 After 6 year the ratio would be = 7x + 6/3x + 6 = 7 × 6 + 6/3 × 6 + 6 = 2/1 = 2 : 1
The ages of A and B are in the ratio of 8 : 5. If the sum of their ages is 39 years, what will be the ratio of their ages after 9 years?
Correct Answer:
D: 11 : 8
In what ratio must a grocer mix two varieties of pulses costing Tk. 15 and Tk. 20 per kg respectively so as to get a mixture worth Tk.16.50 per kg ?
Correct Answer:
C: 7:3
In a certain English class, 1/4 of the number of girls is equal to 1/6 of the total number of students. What is the ratio of the number of girls in the class?
Correct Answer:
C: 1 : 2
A man's expenditure on food is 3/5 of his expenditure on clothes; find the ratio between his expenditure on food and cloth.
Correct Answer:
B: 3 : 5
The sum of two numbers is 40 and their difference is 4. The ratio of the numbers is :
Correct Answer:
B: 11:9
If X is 2/5 of Y and is 5/7 of Z,what is the ratio of Z : X?
Correct Answer:
D: 7 : 2
If A:B = 3:4, C:B= 5:4, C:D=10:9 then A:B:C:D is -
Correct Answer:
C: 6:8:10:9
Explanation:
If A:B = 3:4, C:B= 5:4, C:D=10:9 then A:B:C:D is - Correct Answer 6:8:10:9 A: B = 3 : 4 = ( 3 × 4) : ( 4 × 4) = 12 : 16 C : B = 5 : 4 = ( 5 × 4) : ( 4 × 4) = 20 : 16 C : D = 10 : 9 = ( 10 × 2) : ( 9 × 2) = 20 : 18 A : B : C : D = 12 : 16 : 20 : 18 = 6 : 8 :10 : 9
The speeds of three cars are in the ratio 2 : 3 : 4. The ratio of the times taken by these cars to travel the same distance is ----
Correct Answer:
C: 6 : 4 : 3
Explanation:
The speeds of three cars are in the ratio 2 : 3 : 4. The ratio of the times taken by these cars to travel the same distance is ---- Correct Answer 6 : 4 : 3 ধরি, ১ ম গাড়িটির গতিবেগ 2x km/hr ধরি, ২ ম গাড়িটির গতিবেগ 3x km/hr ধরি, ৩ ম গাড়িটির গতিবেগ 4x km/hr এর দূরত্ব P km গাড়িগুলোর প্রয়োজনীয় সময়ের অনুপাত = Px:P3x:P4x = 12:13:14 = (12×12):(13×12):(14×12) = 6 : 4 : 3
Shajib takes 3 minutes to inspect a car, and Rajib takes 4 minutes to inspect a car. If they both start inspecting different cars at 8:30 AM, what would be the ratio of the number of cars inspected by Shajib and Rajib by 8 : 54 Am of the same day?
Correct Answer:
D: 4 : 3
Explanation:
Shajib takes 3 minutes to inspect a car, and Rajib takes 4 minutes to inspect a car. If they both start inspecting different cars at 8:30 AM, what would be the ratio of the number of cars inspected by Shajib and Rajib by 8 : 54 Am of the same day? Correct Answer 4 : 3 8: 54 Am এবং 8:30 AM এর মধ্যে duration = 54 - 30 = 24 minutes ∴ তাদের ratio = 243244 = 4:3
One year ago, Pinky was four times as old as her daughter Soma. Six years hence, Pinky's age will exceed her daughter's age by 9 years. The ratio of the present ages of Pinky and her daughter is :
Correct Answer:
C: 13:4
If x:y = 5:3 then (8x-5y):(8x+5y) = ?
Correct Answer:
D: 5:11
Explanation:
If x:y = 5:3 then (8x-5y):(8x+5y) = ? Correct Answer 5:11 Hints: x/y = 5/3 8x/5y = 8 × 5/5 × 3 8x - 5y /8x + 5y = 40 - 15 / 40 + 15 = 25/58 = 5/11 = 5 : 11
In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is :
Correct Answer:
A: 1 to 2
Explanation:
In a certain population, there are times as many people aged 21 or under as there are people over 21. The ratio of those 21 or under to the total population is : Correct Answer 1 to 2 Let the number of people over 21 years be x. Given that the number of people aged 21 or under = 3x So total population = 4x Required ratio = 3x : 4x = 3:4 So the answer choice is (e) 3 to 4.
In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it?
Correct Answer:
A: 1 : 2
Explanation:
In what ratio should a 20% methyl alcohol solution be mixed with a 50% methyl alcohol solution so that the resultant solution has 40% methyl alcohol in it? Correct Answer 1 : 2 এটি একটি Frequently আসা অংক বিধায় শুধু Shortcut - টিই দেখানাে হলাে।
Reza's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 is to 2 and the ratio of Indian to British stamps is 5 is to 1, what is the ratio of US to British stamps
Correct Answer:
B: 10:5
Explanation:
Reza's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 is to 2 and the ratio of Indian to British stamps is 5 is to 1, what is the ratio of US to British stamps Correct Answer 10:5 Hints: এখানে অনুপাত দুটিকে একটিতে বানাতে হবে। 5 : 2 কে 5 দিয়ে গুন করে পাই 25 : 10 একইভাবে 5 : 1 কে 2 দিয়ে গুন করে পাই 10 : 2 অনুপাত 25 : 10 : 2 so, the ratio of us to British stamp = 25 : 2
Two equal glasses are respectively one-third and one-fourth full of milk. they are then filled up with water and the contents are mixed in a tumbler. Ratio of milk and water in tumbler is :
Correct Answer:
B: 7:17
Explanation:
Two equal glasses are respectively one-third and one-fourth full of milk. they are then filled up with water and the contents are mixed in a tumbler. Ratio of milk and water in tumbler is : Correct Answer 7:17 সহজে হিসাব = 13 + 14÷23 + 34 = 717
A drink contains 20% cranberry juice, 20% raspberry juice and the rest i apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water to apple juice in the drink?
Correct Answer:
D: 5:9
Explanation:
A drink contains 20% cranberry juice, 20% raspberry juice and the rest i apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water to apple juice in the drink? Correct Answer 5:9 ধরি drink - টি 1000 মিলি. ⸫ Cranberry juice = (1000×20%) = 200 মিলি. Raspberry " = 200 মিলি ⸫ Apple juice = 1000 - (200 + 200) = 600 মিলি ⸫ 750 মিলির মধ্যে apple juice 600×7501000 = 450 মিলি ⸫ water এবং apple ratio = 250 : 450 = 5 : 9
In what ratio must a grocer mix two varieties of tea worth Tk 60 per kg and 65 per kg so that by selling the mixture at Tk 68.20 per kg he may gain 10%?
Correct Answer:
A: 3:2
Explanation:
In what ratio must a grocer mix two varieties of tea worth Tk 60 per kg and 65 per kg so that by selling the mixture at Tk 68.20 per kg he may gain 10%? Correct Answer 3:2 1 কেজি মিশ্রিত চায়ের মূল্য 68.20 টাকা এবং লাভ 10% ⸫ 1 কেজি মিশ্রিত চায়ের ক্রয়মূল্য 100×68.20110 = 62 ⸫ Required ratio = 3 : 2
The ratio between the length and the perimeter of a rectangular plot is 1:3. What is the ratio between the length and breadth of the plot?
Correct Answer:
A: 1:2
Explanation:
The ratio between the length and the perimeter of a rectangular plot is 1:3. What is the ratio between the length and breadth of the plot? Correct Answer 1:2 Hints: Let the length is x and breadth is y. Then perimeter = 2 ( x + y) Now, x / 2(x + y) = 1/3 3x = 2x + 2y x = 2y x/y = 1/2 = 1 : 2
A drink contains 20% cranberry juice, 20% raspberry juice and the rest is apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water of water to apple juice in the drink?
Correct Answer:
D: 5:9
Explanation:
A drink contains 20% cranberry juice, 20% raspberry juice and the rest is apple juice. You added 250 ml water in 750 ml of the drink. Now, what is the ratio of water of water to apple juice in the drink? Correct Answer 5:9 60% of 750 = 0.6× 750 = 450 Now, 250 : 450 = 5 : 9
In what ratio must a grocer mix two varieties of tea worth Tk. 60 a kg and Tk. 65 a kg so that by selling the mixture at Tk. 68.20 a kg he may gain 10%?
Correct Answer:
B: 3:2
Explanation:
In what ratio must a grocer mix two varieties of tea worth Tk. 60 a kg and Tk. 65 a kg so that by selling the mixture at Tk. 68.20 a kg he may gain 10%? Correct Answer 3:2 Selling price of the mixture = Tk.68.20, Gain = 10% Cost price of the mixture = Tk. ( 100/110×68.20) = Tk. 62 Required ratio = 3 : 2
দুটি বৃত্তের ব্যসার্ধের অনুপাত ২:৩ হলে বৃত্ত দুটির ক্ষেত্রফলের অনুপাত কত হবে?
Correct Answer:
খ: ৪ : ৯
Explanation:
দুটি বৃত্তের ব্যসার্ধের অনুপাত ২:৩ হলে বৃত্ত দুটির ক্ষেত্রফলের অনুপাত কত হবে? সঠিক উত্তর ৪ : ৯ মনে করি, বৃত্তদ্বয়ের ব্যাসার্ধ r₁ এবং r₂ ∴r₁/r₂ = 2/3 = > r₁²/r₂² = 4/9 [বর্গ করে] = > πr₁²/πr₂² = 4/9 [বৃত্তের ক্ষেত্রফল] = > πr₁²:πr₂² = 4:9
35% of Tahia's income is equal to 25% of Noria's income . The ratio of their income is --.
Correct Answer:
D: 5:7
Explanation:
35% of Tahia's income is equal to 25% of Noria's income . The ratio of their income is --. Correct Answer 5:7 Let, Tahias income = x and Nonas income = y According to question 35% of x = 25% of y = > 35x/100 = 25y/100 = > 35x = 25y = > x/y = 25/35 ∴x : y = 5 : 7
The salaries of A, B, C are in the ratio 2: 3: 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be the new ratio of their salaries?
Correct Answer:
A: 23 : 33 : 60
Explanation:
The salaries of A, B, C are in the ratio 2: 3: 5. If the increments of 15%, 10% and 20% are allowed respectively in their salaries, then what will be the new ratio of their salaries? Correct Answer 23 : 33 : 60 "Let A = 2k, B = 3k and C = 5k. A's new salary = 115100of2k = 1151002k = 23k10 B's new salary = 110100of 3k = 1101003k = 33k10 C's new salary = 120100of 5k = 1201005k = 6k ∴New Ratio23k10:33k10:6k = 23:33:60
Two number M and N are such that the sum of 5% of M and 4% of N is two-third of the sum of 6% of M and 8% of N. What is the ratio of M and N?
Correct Answer:
D: 4 : 3
Two trains of the same length running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively andhey cross each other in 23 seconds. What is the ratio of their speeds?
Correct Answer:
C: 3 : 2
Explanation:
Two trains of the same length running in opposite directions cross a man standing on the platform in 27 seconds and 17 seconds respectively andhey cross each other in 23 seconds. What is the ratio of their speeds? Correct Answer 3 : 2 দক্ষিণ - পূর্ব এশিয়ার দেশ থাইল্যান্ডের মুদ্রার নাম বাথ। ভারত, নেপাল, পাকিস্তান, শ্রীলংকা, মরিশাসের মুদ্রার নাম রুপি। মালয়েশিয়ার মুদ্রা রিঙ্গিত এবং তুরঙ্কের মুদ্রা লিরা। থাইল্যান্ড শব্দের অর্থ স্বাধীন ভূমি বা মুক্তভূমি।
The ratio of income of Kamran and Dolon is 3 : 4. The ratio of their expenditures is 4 : 5. Find the ratio of their savings if the savings of Kamran is one fourth of his income?
Correct Answer:
D: 12 : 19
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task?
Correct Answer:
A: 2 : 1
Explanation:
If Arif works alone he will take 20 more hours to complete a task than if he works with Babu to complete the task. If Babu work alone, he will take 5 more hours to complete the task than if he works with Arif to complete the task. What is the ratio of the time taken by Arif to than taken by Babu if each of them works alone to complete the task? Correct Answer 2 : 1 ধরি, আরিফ ও বাবু কাজটি করে x ঘন্টায় আরিফ একা কাজটি করে ( x + 20) ঘন্টায় বাবু একা কাজটি করে ( x + 5) ঘন্টায় 1/x + 20 + 1 /x + 5 = 1/x 1/x + 20 = 1/x - 1/x + 5 1/x + 20 = x + 5 - x/x(x + 5) x2 + 5x = 5x + 100 x2 + 5x - 5x = 100 x = 10 আরিফের কাজটি করার সময় : বাবুর কাজটি করার সময় = ( 20 + 10) : ( 5 + 10) = 30 : 15 = 2 : 1
If a and b are integers greater than 100 such that a+b=300, which of the following could be the exact ratio of a to b?
Correct Answer:
A: 9 to 1
Explanation:
If a and b are integers greater than 100 such that a+b=300, which of the following could be the exact ratio of a to b? Correct Answer 9 to 1 9 + 1 = 10;910×300 = 2705 + 2 = 7, 57×300 = fraction5 + 3 = 8, 58×300 = fraction3 + 1 = 5,35×300 = 180;25
A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube?
Correct Answer:
C: 25 : 18
Explanation:
A large cube is formed from the material obtained by melting three smaller cubes of 3,4 and 5 cm side. What is the ratio of the total surface areas of the smaller cubes and the large cube? Correct Answer 25 : 18 রবীন্দ্রনাথ ঠাকুরের লেখা নাট্যগ্রন্থ ‘রক্ত করবী’ । অন্যদিকে আনন্দ মঠ ও দুর্গেশনন্দিনী উপন্যাসের লেখক হলেন বঙ্কিমচন্দ্র চট্টোপাধ্যায়। বিভূতিভুষণ বন্দ্যোপাধ্যায়ের উপন্যাস পথের পাঁচালী।
৩,৯ ও ৪ এর চতুর্থ সমানুপাতিক কত?
Correct Answer:
ঘ: ১২
Explanation:
৩,৯ ও ৪ এর চতুর্থ সমানুপাতিক কত? সঠিক উত্তর ১২ ধরি, চতুর্থ সমানুপাতিক x 3 : 9 = 4 : x 3/9 = 4/x x = 9 × 4 /3 x = 12
একটি পাত্রে দুধ ও পানির অনুপাত ৫:১। দুধের পরিমাণ যদি পানি অপেক্ষা ৪লিটার বেশি হয় তবে পানির পরিমান কত?
Correct Answer:
ক: ২ লিটার
Explanation:
একটি পাত্রে দুধ ও পানির অনুপাত ৫:১। দুধের পরিমাণ যদি পানি অপেক্ষা ৪লিটার বেশি হয় তবে পানির পরিমান কত? সঠিক উত্তর ২ লিটার ধরি, দুধের পরিমাণ 5x লিটার এবং পানির পরিমাণ x লিটার 5x - x = 8 4x = 8 x = 2
ধানে চাল ও তুষের অনুপাত ৭ঃ৩ হলে শতকরা কী পরিমাণ চাল আছে?
Correct Answer:
ঘ: ৭০%
Explanation:
ধানে চাল ও তুষের অনুপাত ৭ঃ৩ হলে শতকরা কী পরিমাণ চাল আছে? সঠিক উত্তর ৭০% ধানের চালের পরিমাণ = 7/7 + 3 = 7/10 চালের পরিমাণের হার = ( 7 /10 × 100)% = 70%
If 30% of A =0.25 of B=1/5th of C, the ratio of A,B and C is _____
Correct Answer:
A: 3 : 6 : 5
Explanation:
If 30% of A =0.25 of B=1/5th of C, the ratio of A,B and C is _____ Correct Answer 3 : 6 : 5 Innocuous - নির্দোষ, assiduous - অধ্যবসায়ী, insidious - প্রতারণাপূর্ণ, auspicious - অনুকূল । তাই শূন্যস্থানে (d) বসবে ।
Tea worth Tk. 165 per kg and Tk. 135 per Kg are mixed with a variety in the ratio 1 : 1 : 2. If the mixture is worth Tk. 153 kg, the price of the third variety per kg will be:
Correct Answer:
C: 175.50
Explanation:
Tea worth Tk. 165 per kg and Tk. 135 per Kg are mixed with a variety in the ratio 1 : 1 : 2. If the mixture is worth Tk. 153 kg, the price of the third variety per kg will be: Correct Answer 175.50 Hints: Let the amount of tea is gradually 1kg, 1kg and 2kg price of third variety is x take per kg According to question ( 126 + 135 + 2x)/4 = 153 261 + 2x = 612 2x = 612 - 261 2x = 351 x = 175. 50
The ratio of the incomes of A and B is : 4 and the ratio of their expenditure is 3 : 2. If at the end of the year, each saves Tk. 1600, then the income of A is:
Correct Answer:
C: 4000
The ratio of the present ages of two brothers is 1 : 2 and 5 years back, the ratio was 1 : 3. What will be the ratio of their ages after 5 years?
Correct Answer:
D: 3 : 5
If x:y=5:3, then (8x - 5y):(8x + 5y)=?
Correct Answer:
A: 5:11
Explanation:
If x:y=5:3, then (8x - 5y):(8x + 5y)=? Correct Answer 5:11 x : y = 5 : 3 x/y = 5/3 8x/5y = 5 × 8/3× 5 8x - 5y / 8x + 5y = 8 - 3 /8 + 3 ( 8x - 5y) : ( 8x - 5y) = 5 : 11