Explanation:

Last year there were 1172 students at Banani High School. This year there are 15 percent more students than last year. Approximately how many students are at Banani High School this year ? Correct Answer 1800 15% of 1172 ≈ 175 Number of students = 1172 + 175 = 1347

Explanation:

A toy store regularly sells all stock at a discount of 20 percent to 40 percent. If an additional 25 percent were deducted from the discount from the discount price during a special sale, what would be the lowest possible price of a toy costing Tk. 16 before any discount? Correct Answer Tk. 7.20 Let cost price(CP) of toy is 100 tk And maximum profit 40% Selling price at 40% discount is 100 - 40 = 60 tk Selling price (SP) After Another additional 25% discount is 60 - 25% of 60 = 60 - 15 = 45 Now If CP is 100tk then possible SP is 45tk " " " 16tk " " " is (45×16)/100 = 7.2 tk Ans. 7.2tk

Explanation:

Ina survey of the people in Dhaka, it was found that 65% of the people surveyed watched the news on television, 40% read a newspaper, and 25% read a newspaper and watched the news on television . what percent of the people surveyed neither watched the news on television nor read a newspaper? Correct Answer 20% Watched the news on television Only = 65 - 25 = 40% read a newspaper only = 40 - 25 = 15% Total = 25 + 15 + 40 = 80% neither watched the news or neither television nor read a newspaper = (100 - 80)% = 20%

Explanation:

একটি বই ২৫% কমিশনে বিক্রয় করা হয়। বইটির প্রকৃত বিক্রয় মূল্য ৭২০ টাকা হলে বইটি কত টাকায় ক্রয় করা যাবে? সঠিক উত্তর ৫০০ যদি বইটি ২৫% কমিশনে বিক্রয় করা হয় এবং প্রকৃত বিক্রয় মূল্য ৭২০ টাকা হয়, তবে আমরা বইটি কত টাকায় ক্রয় করতে পারি তা বের করতে পারি।বইটির বিক্রয় মূল্য = প্রকৃত বিক্রয় মূল্য - (কমিশনের হার / 100) * প্রকৃত বিক্রয় মূল্যবইটির বিক্রয় মূল্য = ৭২০ - (25 / 100) * ৭২০বইটির বিক্রয় মূল্য = ৭২০ - ১৮০বইটির বিক্রয় মূল্য = ৫৪০অতএব, বইটি ক্রয় করা যাবে ৫৪০ টাকায়। সুতরাং, উত্তরটি হলো D. ৫৪০.

Explanation:

একটি স্কুলে মোট ৫৪০ জন ছাত্রের মধ্যে কোন এক বুধবারে ১৭ জন অনুপস্থিত ছিলো। ঐদিন শতকরা কতজন ছাত্র উপস্থিত ছিলো? সঠিক উত্তর ৯৫% উপস্থিত ছিলো = ৫৪০-১৭ = ৫২৩ জনশতকরা উপস্থিত ছিলো = ৫২৩×১০০৫৪০                                     = ৯৬.৮৫২ জন (উত্তর)

Explanation:

যদি একটি সংখ্যার ৩০ শতাংশের ১৫ শতাংশ ১৮ হয় , তবে সংখ্যাটি কত? সঠিক উত্তর ৯ ধরি, সংখ্যা দুটি যথাক্রমে ৫x ও ৮x প্রশ্নমতে, ৫x + ২৮x  + ২ = ২৩ বা, ১৬x + ৪ = ১৫x + ৬ বা, x = ২ ∴ সংখ্যা দুটি যথাক্রমে ৫×২ = ১০ ও ৮×২ = ১৬।

Explanation:

In a class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering students. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam? Correct Answer 22% Eng. male = 120×.25 = 30 Eng.female = 100×.20 = 20 Total eng. student = 30 + 20 = 50 Eng.male passed = 30×.20 = 6 Eng female passed = 20×.25 = 5 So, percentage passed = (6 + 5)/50×100% = 22%

Explanation:

The persent ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teacher? Correct Answer 15 ধরি, বর্তমান ছাত্র সংখ্যা 30x শিক্ষক সংখ্যা x শর্তমতে, ( 30x + 50) : ( x + 5) = 25/1 (30x + 50) / (x + 5) = 25/1 30x + 50 = 25x + 125 5x = 75 x = 15

Explanation:

In an election, 30% of the voters voted for candidate A whereas 60% of the remaining voted for candidate B. The remaining voters did not vote. If the difference between those who voted for candidate A and those who did not vote was 1200, how many individuals were eligible for casting vote in that election ? Correct Answer 60,000 ধরি, মোট ভেটারের সংখ্যা x A প্রার্থীর প্রদেয় ভোটারের সংখ্যা ( 30% of x) = 30x/100 = 3x/10 B প্রার্থীর প্রদেয় ভোটারের সংখ্যা ( x - 3x/10) × 60 /100 = 21x /50. ভোট দেয়নি তাদের সংখ্য = ( x - 3x/10 - 21x/50) = 50x - 15x - 21x/50 = 14x/50 = 7x/25 3x/10 - 7x/25 = 1200 15x - 14x /50 = 1200 x/50 = 1200 x = 60000

Explanation:

A, B, and C enter into a partnership in the ratio 7/2: 4/3: 6/5 .After 4 Months , A increase his share by 50% . If the total profit at the end at one year is Tk. 21,600 , then what is B's share in the profit? Correct Answer Tk.400 Ratio of initial investments = 72:43:65 = 105:40:36 Let, the initial investments be 105x,40x and 36x ∴A:B:C = 105×4 + 150100×105x×8:40x×12:36x×12 = 1680x:480x:432x = 35:10:9Hence, B's share216001054                               = 4000 Tk.

Explanation:

A toy store regularly sells all stock at a discount of 20 percent to 40 percent. If an additional 25 percent were deducted from the discount price during a special sale , what would be the lowest possible price of a toy costing TK. 16 before any discount ? Correct Answer TK. 7.20 Let cost price(CP) of toy is 100 tk And maximum profit 40% Selling price at 40% discount is 100 - 40 = 60 tk Selling price (SP) After Another additional 25% discount is 60 - 25% of 60 = 60 - 15 = 45 Now If CP is 100tk then possible SP is 45tk "    "     "    16tk      "        "       "  is (45×16)/100 = 7.2 tk     Ans. 7.2tk

Explanation:

If the length and width of a rectangular garden plot were each increased by 20 percent, what would be the percent increase in the area of the plot ? Correct Answer 20% মুক্তির গান তারেক মাসুদ ও ক্যাথরিন মাসুদ পরিচালিত মুক্তিযুদ্ধভিত্তিক বাংলা প্রামাণ্য চিত্র। ছবিটি মুক্তি পায় ১৯৯৫ সালে। ১৯৭১ সালে মার্কিন চলচ্চিত্র নির্মাতা লিয়ার লেভিন কর্তৃক বাংলাদেশের স্বাধীনতা যুদ্ধের সংগৃহিত ফুটেজ ও নিজেদের প্রচেষ্টায় প্রাপ্ত উপাদান দ্বারা ফিল্মটি নির্মাণ করেন।

Explanation:

Samad was planning on depositing a certain amount of money each month into a bank. He then decided not to make any contributions during May and June. To make the same annual contribution that he had originally planned, by what percent should he increase his monthly deposits? Correct Answer 20% Let, amount of monthly deposit is Tk. 100 Amount of yearly deposite = 12×100 = Tk. 1200 In 10 month amount of deposit Tk. 1200 In 1 month amount of deposit Tk. 1200/10 = 120 Percentage increase in monthly deposit = 120 - 100 = 20 %

Explanation:

The population of a country doubled every 10 years from 1980 to 2010. What was the percent increase in population during the period ? Correct Answer 100 ঢাকার কে এম দাস লেনের রোজগার্ডেনে এক কর্মী সম্মেলনে পূর্ব বাংলার বাঙালি প্রগতিশীল নেতা ও কর্মী ঢাকায় মিলিত হয়ে ১৯৪৯ সালের ২৩ জুন ‘আওয়ামী মুসলিম লীগ’ গঠন করেন। এ নবগঠিত দলের সভাপতি নির্বাচিত হন মওলানা আব্দুল হামিদ খান ভাসানী। সাধারণ সম্পাদক শামছুল হক এবং যুগ্ম সম্পাদক শেখ মুজিবুর রহমান। ১৯৫৫ সালের ২২ সেপ্টেম্বর দলটির নাম থেকে মুসলিম শব্দটি বর্জন করা হয়।

Explanation:

A solution that contains 20% sugar by weight is made sweeter by doubling the amount of sugar.The percent of sugar, by weight, in the new solution is -- Correct Answer 50% lets say in a solution of 100 mg, 20% that is 20 mg is the sugar, so if it is doubled it will be 20*2 = 40 mg

Explanation:

when a truck travels at 60 miles per hour, it uses 30 percent more gasoline to travel andy distance than it does when it travels at 50 miles per hour. The truck can travel 20 miles on a gallon of gas if it is travelling at 50 miles per hour. The truck has only 10 gallons of gas and is 160 miles from its destination. It takes 20 minutes for the truck to stop for gas . How long will it take the truck to reach its final destination if it is driven at 60 miles per hour? Correct Answer 180 minutes 50 mph a truck need 1 gallon for travelling 20 miles. So, 60 mph a truck need 13 gasoline for travelling 20 miles because of consumption 30% higher. 160 miles will go 60 mph So, it's need 20 minute for taking extra 4 gallon. Therefore, total time = 160 + 20 = 180 minutes.

Explanation:

A salesman usaally makes 45% profit on every TV he sells. During a sale, he reduced his margin of profit to 40% and his sales increased by 10% . what is the ratio of his new profit to his usual profit? Correct Answer 44: 45 Let, No. of Tv sells x and price of Tv is Tk. 100 Total profit = 45 × x = 45 x New sells = x + 10/100 x = 1.1x New profit = 40× 1.1 x = 44 x new profit /usual profit = 44x / 45x = 44/45 = 44 : 45

Explanation:

The present ratio of students to teachers at a certain school is 30 to 1. If the student enrollment were to increase by 50 students and the number of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers ? Correct Answer 5 3.5 - এর শতকরায় প্রকাশ হচ্ছে (3.5 × 100)% = 350 %

Explanation:

Of the total amount that Jill spent on a shopping trip, excluding taxes, she spent 50% on clothing 20% on food, and 30% on other items. If Jill paids 4% tax on clothing , on tax on the food, and an 8% tax on all other items, then the total tax that she paid was what percent of the total amount that she spent, excluding taxes? Correct Answer 4.4% Hints: ধরি, Jill মোট x টাকা ব্যয় করেছিল।জামা - কাপড়ে ব্যয় করে x2টাকাখাবারে ব্যয় করে  x এর 20% = x×20100 = x5 টাকাঅন্যান্য খরচ = x এর 30% = x×30100 = 3x10টাকাজামা - কাপড়ে Tax দেয় = x2×4100 = x50 টাকাঅন্যান্য ব্যয়ের জন্য tax দেয় 3x10×8100 = 3x125 টাকা∴ Tax এর হার x50 + 3x125x×100% = 5x + 6x250x×100% = 11x250×x×100% = 4.4%

Explanation:

If 18 is 15 percent of 30 percent of a certain number, what is the number ? Correct Answer 9 Let, the number = x  x × 30% × 15% = 18 x = ( 18 × 100 × 100) /30×15 = 400

Explanation:

In a survey of the people in Dhaka, it was found that 65% of the people surveyed watched the news on television , 40% read a newspaper, and 25% read a newspaper and watched the news on television . What percent of the people surveyed neither watched the news on television nor read a newspaper ? Correct Answer 0% Watched the news on television Only = 65 - 25 = 40% read a newspaper only = 40 - 25 = 15% Total = 25 + 15 + 40 = 80% neither watched the news or neither television nor read a newspaper = (100 - 80)% = 20%

Explanation:

In a survey, it was found that 65% of the people surveyed watched the news on television, 40% read it on newspaper, and 25% read a newspaper and watched the news on television. What percent of the people surveyed neither watched the news on television nor read a newspaper? Correct Answer 20% Hints: দুই আলাদা % এর থেকে common 25% বিয়োগ দিয়ে result টি হবে যা অন্তত news অথবা paper দেখে। যারা দেখে না = 100 - ( 65 + 40 - 25) = 20%

Explanation:

Rahim's convertible gets gas mileage that is 40% higher than that of Karim's SUV. If Jalil's hatchback gets gas mileage that is 15% higher than of Rahim's convertible, then that of Rahim's convertible, then Jalil's hatchback gets gas mileage that is what percent greater that of Karim's SUV? Correct Answer 61% ধরি, করিমের convertible - এর mileage = 100 রহিমের convertible এর mileage = করিমের 40% বেশি = (100 + 40) = 140 এবং জলিলের concertible এর mileage = রহিমের 15% বেশি। = 140 + 140 এর 15% = 140 + 21 = 161 জলিলের hatchback - এর gas mileage করিমের চেয়ে (161 - 10O) = 61% বেশি।

Explanation:

A discount electronics store normally sells all merchandise at a discount of 10 percent to 30 percent off the marked retail price. If during a special sale an additional 20 percent were to be deducted from the discount price; what would be the lowest possible price of an item marked retail price is Tk. 260? Correct Answer Tk. 145.60 এই Math টিতে 'discount' এর উপর 'discount' হিসাব করতে হবে। যদি 30% off থাকে , তবে (100 - 30) = 70% price এ বিক্রি হচ্ছে। so 30% discount এর জন্য 260Tk হবে = 260 × .70 = 182 Tk. আবার, এই discount price এর উপর 20% discount = 182 × .80 = 145.60 টাকা

Explanation:

Druing a special promotion, a certain filling station is offering a 10% discount on gas purchased after the first the first 10 gallons. If Kim purchased 20 gallons of gas, and Zeni purchased 25 gallons of gas, then Zeni's total per-gallon discount is what percent of Kim's total per-gallon discount? Correct Answer 120% আমাদের কেবল বের করতে হবে কতটুকু পরিমাণে তারা discount পাবে। Actual discount percent নিয়ে চিন্তা না করলেও হবে, যেহেতু, ভাগ করার সময় percentage (10%) বাদ হবে Zeni 25 gallon এর মধ্যে 15 gallon এবং Kim 20 gallon এর মধ্যে 10 gallon discount পায়। তাহলে Kim এর সাপেক্ষে।

Explanation:

In a class, 120 students are finance major and 100 students are marketing major, 25% of the finance students and 20% of the marketing students are male. 20% of the male finance student and 25% of the male marketing students passed the final xam. What percentage of male students passed the exam? Correct Answer 5% Hints: Finance এর ছাত্রসংখ্যা = ( 120 ×25/100) = 30জন Marketing এর ছাত্রসংখ্যা = (100×20/100) = 20 জন Finance এ পাশ করে = 30×20/100 = 6 জন Marketing এ পাস করে = 20×25/100 = 5 জন মোট ছাত্র - ছাত্রী (120 + 100) জন = 220 জন শতকরা পাস করে = ( 6 + 5)/220 ×100 = 5 জন

Explanation:

Before the budget, a businessman had increased the price of his product by 12%. In the budget, a 10% sales tax (to be paid by the seller) was imposed on that product. As a result, the profit ultimately increased by Tk 64. What was the original selling price? Correct Answer Tk 8,000 Let, Original selling price be x After increaseing 12% then the price x + 12 of x = 1.12x Now, vat to be paid 10% of 1.12x = 0.112x Need profit = 0.12x - 0.112x = 0.008x According to question, 0.008x = 64 x = 8000 Tk.

Explanation:

In a group of people solicited by a charity , 30% contributed TK. 40 each, 45% contributed TK. 20 each and the rest contributed TK. 12 each . What percentage of the total contributed came from people who gave TK. 40 ? Correct Answer 25% Let, total participant = 100 30% contributed = 40×30% = 40×30/100 = 12 Tk. 45% contributed = 20 × 45 % = 20×45/100 = 9 Tk.  Test = { 100 - ( 30 + 45) }% = 25% contributed = 12×25/100 = 3 Tk. The percentage of total amount came from people who gave Tk 40 each = 12 /( 12 + 9 + 3) ×100 = 50%

Explanation:

In a class, 120 students are male and 100 students are female. 25% of the male students and 20% of the female students are engineering student. 20% of the male engineering students and 25% of the female engineering students passed the final exam. What percentage of engineering students passed the exam? Correct Answer 22% এখানে, Male eng. student এর সংখ্যা (120×25%) = 30 জন Female eng. student এর সংখ্যা (100×20%) = 20 জন ∴ Total eng. student পাশ করেছে (30 + 20) = 50 জন Male eng. student পাশ করেছে (30×20%) = 6  জন। শতকরা পাশ করেছে 6 + 550×100 = 22%;

Explanation:

After the increase of price of oil by 40%, a family decided to reduce its oil consumption so that the expenditure for oil goes up by 26% only. If the total consumption of oil before the price rise was 10 kg per month, then what is the current consumption of oil per month (in kg)? Correct Answer 9 40% বৃদ্ধিতে, বর্তমান মূল্য 140 টাকা হলে পূর্ব মূল্য 100 টাকা বর্তমান মূল্য 126 টাকা হলে পূর্ব মূল্য ( 100/140 × 126) = 90 টাকা এখন, পূর্বে 100 টাকায় পাওয়া যেত 10 kg তেল পূর্বে 90 টাকায় পাওয়া যেত ( 10/100 × 90) = 9 kg তেল অর্থাৎ, বর্তমান ব্যবহার 9 kg ।

Explanation:

কোনো পরীক্ষায় মোট পরীক্ষার্থীর ৮০% গনিতে এবং ৭০% বাংলায় পাস করলো। উভয় বিষয়ে পাস করলো ৬০%, উভয় বিষয়ে শত করা কতজন ফেল করলো? সঠিক উত্তর ১০% ধরি, উভয় বিষয়ে ফেল করে x জন T = M + B - Both + x 100% = 80% + 70% - 60% + x = 100% - 90% x = 10%

Explanation:

A stock decreases in value by 25%. By what percent must the value of that stock increase to reach its former value ? Correct Answer 30% (2 + 3) বা 5 বছরে সুদাসল = 300 এবং বছর পর সুদাসল = 240 3 জছরের সুদ = 60

Explanation:

If the langth of a rectangle is increased by 20% and width is decreased by 20% what is the change in area of rectangle ? Correct Answer decreased by 4% p + q + pq/100 = 20 - 20 - (20*20)/100 = - 4% decreas 4%

Explanation:

Mr.Nazim was planning on depositing a certain amount of money each month into a college fund for his children. He then decided not to make any contributions during June and July. To make the same annual contribution that he had originally planned, by what percent should he increase his monthly deposits? Correct Answer 1623% Assume we conteributes 100 Tk per month, for an annual total of 1200 Tk.Seeing that he missed two months : 1200 - 1000 = 200 1 have2001200×100 = 1623%

Explanation:

At a special sale, 5 tickets can be purchased for the price of 3 tickets. If 5 tickets are purchased at this sale, the amount saved will be what percent of the original price of the 5 tickets? Correct Answer 20% Let the original price of each ticket be TK. 100 Then, original price of 5 tickets = TK. 500 Sale price of 5 tickets = TK. 300 Amount saved : = TK. (500 - 300) = TK. 200 ∴ Required percentage : = (200/500)×100 = 40%