Aptitude - Percentages Online Quiz

Following quiz provides Multiple Choice Questions (MCQs) related to Percentages. You will have to read all the given answers and click over the correct answer. If you are not sure about the answer then you can check the answer using Show Answer button. You can use Next Quiz button to check new set of questions in the quiz.

Questions and Answers

Q 1 - 88% of 370 + 24% of 210 - ? = 118

A - 258

B - 298

C - 320

D - 18

Answer : A

Explanation

Let the unknown value is p
88% of 370 + 24% of 210 - p = 118
p = 325.60 + 50.40 - 118
= 258

Q 2 - The difference between a number and its two-fifth is 510. What is 10% of that number?

A - 75

B - 25

C - 90

D - 85

Answer : D

Explanation

Let p be the number.
Then, p - 2⁄5 p = 510
p = 850, 10% of 850 = 85

Q 3 - A fruit seller had some fruits. He sells 40% of them and still has 420 of them. Originally, he had how many of them?

A - 800

B - 600

C - 700

D - 900

Answer : C

Explanation

Let he had p number of fruits.
The, (100 - 40)% of p = 420
Therefore, p = (420 x 100⁄60) = 700

Q 4 - 10% of the voters did not cast their votes in an election between two candidates. 10% of the votes polled were found invalid. The successful candidate for 54% of the valid votes and won by a majority of 1620 votes. Find the number of voters enrolled on the voters list?

A - 27000

B - 32000

C - 25000

D - 28000

Answer : C

Explanation

Let z be the total number of voters.
Votes polled = 90% of z
Valid votes = (90% of (90% of z))
Therefore, 54% of [90% of (90% of z)] - 46% of [90% of (90% of z)] = 1620
→ 8% of [90% of (90% of z)] = 1620
The number of voters enrolled were z = 25000

Q 5 - A salesman is allowed 51⁄2% discount on the total sales made by him plus a bonus of 1⁄2% on the sales over Rs. 10000. If his total earnings were Rs. 1990, then his total sales in Rs. were?

A - Rs. 39000

B - Rs. 35000

C - Rs. 34000

D - Rs. 38000

Answer : C

Explanation

Let z be the total sales.
Then, 51⁄2% of z + 1⁄2% of (z - 10000) = 1990
→ 12z - 10000 = 398000
z = Rs. 34000

Q 6 - If the side of a square is increased by 25%, its area is increased by

A - 56.25%

B - 54%

C - 56%

D - 54.25%

Answer : A

Explanation

Let side =100m
Area = 100*100=10000 m2
New area =125*125=15625 m2
Increase in area =
5625/10000*100=56.25%

Q 7 - What will be 90 % of a number whose 200% is 300?

A - 135

B - 140

C - 145

D - 150

Answer : A

Explanation

200% of x = 300,=>x=150
90% of 150=135

Q 8 - The estimation of a machine deteriorates at the rate of 10% for every annum. On the off chance that its present worth is Rs. 8100, what will be its worth following 3 years?

A - Rs 29049

B - Rs 59049

C - Rs 49049

D - Rs 39049

Answer : B

Explanation

Value of the machine after three years
= Rs{81000*(1-10/100)3 }
 = 81000* 9/10*9/10*9/10 = Rs 59049

Q 9 - ?% of 24 = 0.72

A - 10.5

B - 11.5

C - 12.5

D - 13.5

Answer : C

Explanation

Let x% of 24 = 0.72. Then,
(x/100*24)=0.72= 72/100=>24x=72 =>x=3.

Q 10 - In a class of 60 children, 30% children can speak only English, 20% both Hindi and English and the rest of the children only Hindi. How many children can speak Hindi?

A - 42

B - 36

C - 45

D - 48

Answer : A

Explanation

Total number of children in the class = 60
Number of children who can speak only in English = 30% of 60
= (30/100)*60
= 18
Number of children who can speak both Hindi and English = 20% of 60
= (20/100)*60
= 12
∴ Number of children who can speak only Hindi = 60 – 18 – 12 = 30
∴ Number of children who can speak Hindi = 30 + 12 = 42

aptitude_percentages.htm
Advertisements