Explanation:

Approximately what percent of class VIII students play Cricket out of the total students playing Cricket . Correct Answer 15 এখানে মোট কতজন VIII class থেকে cricket খেলে তা সর্বমোট কতজন ক্রিকেট খেলে তা বের করে শতকরা করতে হবে। <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mn>25</mn><mrow><mn>38</mn><mo> + </mo><mn>40</mn><mo> + </mo><mn>12</mn><mo> + </mo><mn>17</mn><mo> + </mo><mn>25</mn><mo> + </mo><mn>18</mn><mo> + </mo><mn>20</mn></mrow></mfrac><mo>×</mo><mn>100</mn><mo>%</mo><mo> = </mo><mn>14</mn><mo>.</mo><mn>7</mn><mo>%</mo></math>

Explanation:

Approximately what percent of Class X students play Table Tennis out of the total class x students playing the different given games? Correct Answer 18 The percentage of class X students play Table Tennis is <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mn>21</mn><mrow><mn>5</mn><mo> + </mo><mn>12</mn><mo> + </mo><mn>7</mn><mo> + </mo><mn>21</mn><mo> + </mo><mn>18</mn><mo> + </mo><mn>8</mn><mo> + </mo><mn>11</mn><mo> + </mo><mn>33</mn></mrow></mfrac><mo>×</mo><mn>100</mn><mo>%</mo><mo> = </mo><mn>18</mn><mo>.</mo><mn>26</mn><mo>%</mo></math>

Explanation:

1 quintal 25 kg is what percent of 1 metric ton? Correct Answer 12 1/2% 1 quintal = 100kg; 1 metric ton = 1000kg<math xmlns = "http://www.w3.org/1998/Math/MathML"><mo>∴</mo><mo>%</mo><mo> = </mo><mfrac><mrow><mn>100</mn><mo> + </mo><mn>25</mn></mrow><mn>1000</mn></mfrac><mo>×</mo><mn>100</mn><mo>%</mo><mo> = </mo><mn>12</mn><mo>.</mo><mn>5</mn><mo>%</mo></math>

Explanation:

Price of a product is discounted by 20% and the reduced price is then discounted by 5%. The ultimate discount is: Correct Answer 24% Let, the price of product be 100  and then after first discount price becomes = 100 - 20 = 80 tk  and then again it is discounted by = 5% of 80 = 4 tk  so price of telvision becomes = 80 - 4 = 76 tk So,The ultimate discount is = 100 - 76 = 24 tk ans: 24%

Explanation:

If the radius of a circle is increased by 6%, then the area of the circle is increased by - Correct Answer 12.36% Initial area =  πr2 New radius = r + 6% of r = 1.06r So, new area =  π(1.06r)2 = 1.1236πr2 So, percentage of increase in area = (1.1236πr2 -  πr2) / πr2 x 100% = 12.36%

Explanation:

If the circumference of a circle is increased by 50%, its area will be increased by : Correct Answer 125% Circumference of a circle increases only with radius. Therefore, radius of the circle gets increased by 50%. Now, new radius = R + 50% of R = 1.5R Initial area =  π R2 New area =  π (1.5R)2 = 2.25 π R2 Percent increase = ((2.25 π R2) - (π R2)} / (π R2)  x 100% = 125%

Explanation:

Novera bought a ticket of a cricket match for TK. 25 and later sold the ticket to Nahid for TK. 75. What was the percent increase in the price of the ticket ? Correct Answer 200% Profit = (0.75 - 0.25) / 0.25 x 100% = 0.5 / 0.25 x 100% = 200%

Explanation:

Mr. Khan's salary is TK. 5000.00 and he gets 10% commission of his salary. If his salary increased by 10%, by what percent his commission will increase ? Correct Answer 10% Even if the percentage of his commission remains the same, his total commission will increase due to the increament of his salary. Previous commission = 10% of 5000 = 500 New salary = 5000 + 10% of 5000 = 5000 + 500 = 5500 New commission = 10% of 5500 = 550 Increament of commission = (550 - 500) / 500 x 100% = 10%

Explanation:

In a certain class 40% of the students are girls, and 20% of the girls wear glasses. What percent of students in the class are girls who wear glasses. Correct Answer 8% Let the total number of students in a class = 100 40% of students are girls. Number of girls in a class =   20% of the girls wear glasses. Number of girls wear glasses =   Percentage of the children in the class are girls who wear glasses =   = 8% ans: 8%

Explanation:

In 2000, the book value of a car was 2/3rd of the original purchase price, and in 2004, its book value was 1/2 of the original purchase price. By what percentage did the value of the car decrease from 2000 to 2004. Correct Answer 25% In 2000, the book value of a car was 2/3rd of the original purchase price, and in 2004, its book value was 1/2 of the original purchase price. By what percentage did the value of the car decrease from 2000 to 2004. Let the original price be P. Value in 2000 = 2P/3 Value in 2004 = P/2 So, percentage of decrease in value = (2P/3 - P/2) / (2P/3) x 100% = 25%

Explanation:

If the length and width of a rectangular plot were increased by 20 percent, then what would be the percent increase in the area of the plot? Correct Answer 44% Short - cut Method A + B + AB /100 = 20 + 20 + (20× 20)/100 = 40 + 4 = 44 or 44%

Explanation:

What percent of 50 is 2 ? Correct Answer 4 Let the percentage be X. Then,  X% of 50 = 2 or,  X/100 x 50 = 2 or, X = 2 x 100 / 50 So, X = 4.

Explanation:

একটি পরীক্ষায় ৭৫ টি প্রশ্ন ছিল। রহিম ৬০ টি প্রশ্নের উত্তর দিয়েছে । সে শতকরা কতটি প্রশ্নের উত্তর দিয়েছে? সঠিক উত্তর ৮০% ৭৫টি প্রশ্নের মধ্যে শুদ্ধ উত্তর দিয়েছে ৬০টি ১  "        "       "       "       "         "    (৬০÷৭৫) " ১০০ "     "     "       "      "        "    (৬০×১০০÷৭৫)"                                                      = ৮০টি  উত্তর:৮০%

Explanation:

If Arif is making a profit of 25 percent on his selling price, what is his actual profit percentage? Correct Answer 25% Actual profit percentage = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mfrac><mn>25</mn><mrow><mn>100</mn><mo> - </mo><mn>25</mn></mrow></mfrac><mo>×</mo><mn>100</mn><mo> = </mo><mn>33</mn><mo>.</mo><mn>33</mn><mo>%</mo></math>

Explanation:

Neela got married 6 years ago. Today her age is 1.25 percent times her age at the time of marriage. Her son's age is 1/10 her age. Her son's age is: Correct Answer 3 years Let, x be the age at the time of marriage So, 1.25x - x = 6 = .25x = 6x = 24So, Neeka's present age = 24 + 6 = 30And her son's age = <math xmlns = "http://www.w3.org/1998/Math/MathML"><mn>30</mn><mo>×</mo><mfrac><mn>1</mn><mn>10</mn></mfrac><mo> </mo><mo> = </mo><mn>30</mn></math>

Explanation:

একটি বর্গক্ষেত্রের প্রতিটি বাহু ১০% বৃদ্ধি করলে ক্ষেত্রফল কত বৃদ্ধি পাবে ? সঠিক উত্তর ২১% ধরি বর্গক্ষেত্রের বাহুর দৈর্ঘ্য ১০০সুতরাং ক্ষেত্রফল = ১০০×১০০ = ১০,০০০বাহুর দৈর্ঘ্য ১০% বৃদ্ধি পেলে নতুন বাহুর দৈর্ঘ্য = ১১০সুতরাং ক্ষেত্রফল= (১১০×১১০) = ১২,১০০ক্ষেত্রফল বৃদ্ধি = ১২,১০০-১০,০০০ = ২,১০০১০,০০০ এ ক্ষেত্রফল বৃদ্ধি ২,১০০১           এ ক্ষেত্রফল বৃদ্ধি (২১০০/১০০০০)১০০       এ ক্ষেত্রফল বৃদ্ধি (২১০০×১০০)/১০০০০                                   = ২১সুতরাং নির্ণয়ে ক্ষেত্রফল বৃদ্ধি = ২১%

Explanation:

Sumi walks to her office at the rate of 4 miles per hour. If she increases her walking speed by 1 mile per hour , she would reach her office half an hour earlier than the previous time. What is the distance in miles of her office from her house ? Correct Answer 10 Let the distance and time be d mile and T hours respectively. So,  d = 4T. Again,  d = (4 + 1) (T - 1/2) or,  4T = 5(T - 1/2) or,  4T = 5T - 5/2 or,  5T - 4T = 5/2 or,  T = 5/2 hours So,  d = 4T = 4 x 5/2 = 10 mile.

Explanation:

The share price of a bank decreased by 5% on the 15th of November, but increased by 10% of the next day. What was the overall rate of loss or gain? Correct Answer 4.58% gain Let the initial share price be S. Decreased share price = S - 5% of S = 0.95S Increased share price = 0.95S + 10% of 0.95S = 1.045S So, gain percentage = (1.045S - S) / S x 100% = 4.5%

Explanation:

A bank recruited 126 new employees and found that the total number of its employees has increased by 14%. What was the number of employees in the bank before the new recruitment ? Correct Answer 900 No. of employee*percentage increase = no. of increase Or, No. of employee*0.14 = 126 Or, No. of employee = 126/0.14 = 900

Explanation:

If the area of a square increases by 69%, then the side of the square increases by --- Correct Answer 30% Let the initial side of the square be X. Initial area = X2 New area = X2 + 69% of X2  = 169% of X2  = 169 / 100 x X2  = 1.69X2 So, new side = √(1.69X2) = 1.3X Therefore, increase in side = (1.3X - X) / X x 100% =  30%

Explanation:

In an election between two candidates, one got 55% of the total valid votes. 20% of the votes are invalid. If the total votes are 7500, what is the total number of valid votes the other got? Correct Answer 2700 Total number of votes = 7500 Given that 20% of Percentage votes were invalid = > Valid votes = 80% Total valid votes = 7500*(80/100) 1st candidate got 55% of the total valid votes. Hence the 2nd candidate should have got 45% of the total valid votes = > Valid votes that 2nd candidate got = total valid votes x (45/100) 7500*(80/100)*(45/100) = 2700

Explanation:

If x/y=4 and y is not 0, what percentage (to the nearest percent) of x is 2x-y? Correct Answer 175% Here,  x / y = 4 or, x = 4y or, 2x = 8y or, 2x - y = 8y - y or, 2x - y = 7y Now,  (2x - y) / x = 7y / 4y or, 2x - y = 7 / 4 x 100% So, 2x - y = 175% of x

Explanation:

The length and breadth of a rectangle are 24 meters and 12 meter respectively. By what percent the area of the rectangle will increase if its length and breadth are increased by 6%? Correct Answer 12.36 New length = 1.06x, new width = 1.06y So, new area = 1.06*1.06xy So, Increase in area = 1.06*1.06 - 1 = 0.1236 = 12.36%

Explanation:

By what per cent the use of fuel is to be reduced in order to keep expenditure on it at same level when its price is increased by25% ? Correct Answer 20 Reduction % in consumption = (100 + rr​×100)% = (12525​×100) = 20%

Explanation:

The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month . What is the age of their father ? Correct Answer None of these the quesion is wrong. it should be -   The monthly salary of a person is increased by 10% in one month, but is decreased by 10% in the next month. What's the percentage change in his salary?   Solution: Let the initial salary be 100 tk. Increase by 10% will imply = 100 + 100x10/100 = (100 + 10) = 110 tk. Decrease by 10% will mean = 90% of 110 = 99 Hence the effective change is a decrease by = (100 - 99)% = 1%. (ans)

Explanation:

A mixture of 20 kg of spirit and water contains 10% water. How much water must be added to this mixture to raise the percentage of water to 25% ? Correct Answer 4 Amount of water in the mixture = 10% of 20 kg = 2 kg So, amount of spirit = 20 - 2 = 18 kg Percentage of spirit in new mixture = 100 - 25 = 75% Now, 75% of mixture = 18 kg So, 100% of mixture = 18 x 100 / 75 = 24 kg So, amount of water need to be added = 24 - 20 = 4 kg

Explanation:

In a certain school , 40% of the students are boys . If 20% of the boys and 10% of the girls went on a field trip, what percentage of the total students went to the field trip? Correct Answer 14% Boys = 40% of the students Girls = 100 - 40 = 60% of the students Boys went to the field trip = 20% of 40% of students = 20/100 of 40% of students = 8% Girls went to the field trip = 10% of 60% of students = 10/100 of 60% of students = 6% Total students went to the field trip = 8% + 6% = 14%

Explanation:

If 4 times an integer x is increased by 10 , the result is always greater than 18 and less than 34 . what is the least value of x? Correct Answer 3 You have to go through the options here to find out the answer. Option 1: 2*4 + 10 = 18 This is not greater than 18. Option 2: 3*4 + 10 = 22 This is greater than 18 and less than 34. Plus, this is the lowest integer that follows the given conditions.

Explanation:

A restaurant meal costs Tk. 35.50 and there was no tax. If the tip was more than 10 percent but less than 15 percent of the cost of the meal, then the total amount paid must have been between --- Correct Answer Tk. 39 & Tk. 41 let, Tip = t 10<t<15 Min = 35.50*1.10 = 39.05 Max = 35.50*1.15 = 40.825 39.05 < t < 40.825 so,the total amount paid must have been between Tk.39 & Tk.41 (ans)

Explanation:

For some value of x , 5(x+2) =y . After the value of x is increased by ,3 5(x+2) =z. what is the value of (z -y) ? Correct Answer 15 Here, y = 5(x + 2) z = 5(x + 3 + 2) [using x + 3 in place of x] Now, z - y = 5(x + 5) - 5(x + 2) = 5x + 25 - 5x - 10 = 15

Explanation:

Which one of the following is equal to 1/4 of 0.01 percent ? Correct Answer 0.0025 1/4 of 0.01 % = 1/4 of 0.01/100 = 0.0025

Explanation:

Jonyh bought a shirt, a pair of pants and a pair of shoes , which cost Tk. 1,000 Tk. 2,000 , and Tk. 3,000 respectively. What percent of the total expense was spent for the pants? Correct Answer 33.33% Percent of total expense spent for pants = 2000 / (1000 + 2000 + 3000) x 100% =  33.33%

Explanation:

Danny attended a test containing 40 questions. If he had corrected 18 questions out of the first 22 and two-third of the remaining questions, what percent of all the questions did he answer correctly? Correct Answer 75% Danny attended a test containing 40 questions. If he had corrected 18 questions out of the first 22 and two - third of the remaining questions, what percent of all the questions did he answer correctly? Total number of correctly answered questions = 18 + 2/3 of (40 - 22) = 18 + 2/3 of 18 = 18 + 12 = 30 Percentage of correctly answered questions = 30 / 40 x 100% = 75%

Explanation:

What percent of 1/2 is 12/16? Correct Answer 150% Let the percentage be X. So, X% of 1/2 = 12/16 or, X/100 of 1/2 = 12/16 or, X = 12/16 x 2 x 100 = 150

Explanation:

In a school 80% students passed in Bangla and 65% passed in Science . If 50% of the students have passed both the subjects, what percent of the students have failed in both Bangla and Science? Correct Answer 5% Students passed in atleast one subject = 80% + 65% - 50% = 95% Students failed in both subjects = 100% - 95% = 5%

Explanation:

From 2004 to 2005. the sales of a book decreased by 80%. If the sales in 2006 were the same as in 2004, by what percent did they increase from 2005 to 2006 ? Correct Answer 400% let, 100 copies were sold in 2004 ∴copies sold in 2005 = 100 - 80 = 20 copies sold in 2006 = 100 so, required increase = (100 - 20)/20 × 100 = 400% (ans)

Explanation:

50% of the people in an area read Ittefaq and 60% of the people in that area read Prothom Alo. 20% people read both the newspapers. What percent of people do not read any of the newspapers ? Correct Answer 10 Total = Ittefaq + Prothom Alo - Both + None = > 100% = 50% + 60% - 20% + None. So, None = 10%

Explanation:

একটি বই বিক্রয় করার সময় বিক্রেতা লিখিত মূল্যের উপর ১৫% কমিশন প্রদান করে। বইটির লিখিত বিক্রয়মূল্য ১২০ টাকা হলে বইটি কত টাকায় ক্রয় করা যাবে? সঠিক উত্তর ১০২ টাকা ১২০× ১৫% = ১২০ × ১৫/১০০ = ১৮ বইটি ক্রয় করা যাবে ( ১২০ - ১৮) = ১০২ টাকায়

Explanation:

In a college, 45% of the students are boys. If 40% of the boys and 20% of the girls went on a picnic, what percentage of the total students went to the picnic? Correct Answer 29% Boy's 45%, So, Girls = ( 100 - 45) % = 55% Boy's went to picnic = 45% of 40% = 18% Girls went to picnic = 55% of 20% = 11% Total students went on a picnic = ( 18 + 11) % = 29 %

Explanation:

Buffet dinner at a restaurant costs Tk 35.50 . If the sales tax was more than 10 percent but less than 15 percent of the pre-tax cost of the dinner, then the total amount paid must have been between-- Correct Answer Tk 39 & Tk 41 The minimum value of 10% including tax = 35.50 + 3.55 = 39.05 and the maximum value of 15% including tax = 35.50 + 5.325 = 40.825 So, the total amount will be paid Tk. 39 and tk. 41

Explanation:

Eight people are planning to share equally the cost of a rental car . If one person withdraws from the arrangement and the others share equally the entire cost of the car ,then the share of each of the remaining persons will be increased by - Correct Answer 1/7 Original share of 1 person = 1/8 New share of 1 person = 1/7 Increase = ( 1/7 - 1/8) = 1/56 Required fraction = (1/56) / (1/8) = 1/7

Explanation:

A circular logo is enlarged to fit the lid of a jar. The new diameter is 50 percent larger than the original. By what percentage has the area of the logo increased? Correct Answer 125 Original area = A1 = π(d1)2/4 New area = A2 = π(d2)2/4 A1/A2 = d22/d12 = (1.5)2 = 2.25 A2 = 2.25A1 So, increase = 2.25A1 - A1 = 1.25A1 This is an increase of 125%

Explanation:

If the purchasing price of 15 apples and selling price of 12 apples are the same then how much is the gain in percentage form ? Correct Answer 25% Purchasing price of each apple = 1/15  Selling price of each apple = 1/12 Gain percentage = (1/12 - 1/15) / (1/15) × 100% = (5 - 4)/60 / (1/15) × 100% = 1/60 × 15 × 100% = 25%

Explanation:

A reduction of 21% in the price of pulse enables a person to by 10.5 kg more for Tk. 100. How much is reduced per kg of pulse? Correct Answer Tk 2 ধরি, original দাম = x Tk per kg reduced দাম = 79x/100 Tk per kg তাহলে, 100/(79x/100) - 100/x = 10.5 10000 - 7900 = 10.5 × 79x x = 2100/(10.5×79) তাহলে, required price = 79/100×2100/(10.5×79) = 2 Tk per kg

Explanation:

A bookseller can gain 6.666% if he offers a 20% commission on the written selling price of a book. If the commission is reduced to 10% , what will be his gain ? Correct Answer 20% Let the  actual and written price be A and S respectively. Selling price at 6.666% gain = A + 6.666% of A = 1.0666A Selling price at 20% commission or written price = S - 20% of S = S - 0.2S = 0.8S Selling price at 6.666% gain = Selling price at 20% commission on written price or,  1.066A = 0.8S or,  S = 1.066A/0.8 = 1.33325A Selling price at 10% commission = S - 10% of S = S - 0.1S = 0.9S So, gain at 10% commission on written price = (0.9S - A) / A x 100% = (0.9 ×1.33325A - A) / A × 100% = (1.2A - A) / A × 100% = 0.2 × 100% = 20%

Explanation:

A number consists of 3 digits whose sum is 10. The middle digit is equal to the sum of the other two and the number will be increased by 99 if its digits are reversed. what is the number? Correct Answer 253 253 + 99 = 352, The number of are reversed.

Explanation:

If a rectangle's length and width are both doubled, by what percent is the rectangle's area increased? Correct Answer 300% Let the initial length and width be L and W respectively. Initial area = L×W New length = 2L New width = 2W New area = 2L×2W = 4 L×W Increase in area = (4 L×W - L×W) / (L×W) × 100% = 300%