Aptitude - Percentages Online Quiz


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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 - 40% of 1640 + ? = 35% of 980 + 150% of 850 ?

A - 962

B - 992

C - 300

D - 452

Answer : A

Explanation

Let the unknown value is p, then
p = (35100 x 980  + 150100 x 850) - (40100 x 1640 )
p = 343 + 619 = 962

Q 2 - It costs Rs. 1 to photocopy a sheet of paper. However, 2% discount is allowed on all photocopies done after first 1000 sheets. How much will it cost to copy 5000 sheets of paper?

A - 4880

B - 4980

C - 4920

D - 4900

Answer : C

Explanation

Cost = 1 x 1000 + (100-2)% of 1 x 4000
= 1000 + (98)% of 4000
= 1000 + 3920 = Rs. 4920

Q 3 - In an examination, 35% of the students passed and 455 failed. How many students appeared for the examination?

A - 700

B - 500

C - 900

D - 1100

Answer : A

Explanation

Let s be the number of students appeared for the examination.
Then, 65% of s = 455
i.e. 65100s = 455
Therefore, Students = 700

Q 4 - If m% of m is 36, then m is?

A - 70

B - 64

C - 50

D - 60

Answer : D

Explanation

→ Z% of Z = 36
Therefore, (Z100)x Z = 36
Z = 60

Q 5 - In a recent survey, 40% houses contained two or more people. Of those house containing only one person, 25% were having only a male. What is the percentage of all houses, which contain exactly one female and no males?

A - 35%

B - 30%

C - 55%

D - 45%

Answer : D

Explanation

Let Z be the number of houses.
Therefore, number of houses having one family = (100 - 25)% of (100 - 40)% of Z
= (75100 x 60100 x Z)
Z = 45%

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 - The population of a town increases 5% annually but is decreased by immigration annually to the extent of 0.5 % .what will be the increase percent in 3 years

A - 11%

B - 11.4%

C - 11.6%

D - 11.8%

Answer : A

Explanation

Increase in 3 years over 100 
=100 * ( 1+ 9/(2*100))3
=114.11
%AGE INCREASE = 11.4%

Q 8 - A Man donated 5% of his income to a trust and deposited 20 % of the remainder in bank. If he now gets Rs. 1919 left, what is his income.

A - 2503.5

B - 2650.5

C - 2525

D - 2558.60

Answer : C

Explanation

Let his income be x, then
x-5% of x - 20% of 95% of x = 1919     0r 
x-x/20-(20*95*x)/(100*100)=1919
x=Rs.2525

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 - The production of company A increased by 25% from 1994 to 1995 and its production further increased by 60% from 1995 to 1996. What is the total percent increase in production from 1994 to 1996?

A - 85%

B - 75%

C - 200%

D - 100%

Answer : D

Explanation

Production in 1996 = 160/100 * 125/100 * Production on 1994
= 20000/10000 * Production on 1994
= 2 * Production on 1994
∴ Required % Increase = {(Production on 1996 - Production on 1994)/ Production on 1994}*100%
Consider, Production on 1994 = x. Then, Production on 1996 = 2x.
= (2x  x)/x * 100%= 100%


aptitude_percentages.htm

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