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 - 860% of 50 + 50% of 860 = ?

A - 340

B - 320

C - 40

D - 860

Answer : D

Explanation

= (860⁄100 x 50  + 50⁄100 x 860)
= 860

Q 2 - If a number p is 10% less than another number q and q is 10% more than 125, then p is equal to?

A - 123

B - 123.75

C - 132.50

D - 132.25

Answer : B

Explanation

q = 125 + 10% of 125 = 137.50
p = 137.50 - 10% of 137.50 = 123.75

Q 3 - Three candidates contested and election and received 1136, 7636 and 11628 votes respectively. What percentage of the total votes did the winning candidate get?

A - 30%

B - 57%

C - 72%

D - 43%

Answer : B

Explanation

Total votes polled: 1136 + 7636 + 11628
= 20400
Therefore, percentage = (11628⁄20400 x 100)%
= 57%

Q 4 - In an election between two candidates, one got 55% of the total valid votes, 20% of the votes were invalid. If the total number of votes was 7500, the number of valid votes that the other candidate got, was:

A - 3200

B - 4500

C - 1500

D - 2700

Answer : D

Explanation

Number of valid votes = 80⁄100 x 7500 = 6000
Valid votes polled by other candidate = (45⁄100 x 6000) = 2700

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 - The strength of a school increases and decreases every alternate year. It starts with increase by 10% and thereafter the percentage of increase/decrease is the same. Which of the following is definitely true about the strength of the school in 2000 as compared to that in 1996 (approximately)?

A - 2% increase

B - 2% decrease

C - 20% increase

D - 20% decrease

Answer : B

Explanation

Let the strength of the school in 1996 be 100.
∴ Strength in 1997 = 110
Strength in 1998 = 100 * 90/100 = 99
Strength in 1999 = 99 *110/100 = 108.9
Strength in 2000 = 108.9 * 90/100 = 98.01
∴ Approximately 2% decrease

Q 7 - 10% income of A is equal to 15% income of B and 12% of income of B is equal to 20%of income of C. If the income of C is 1000, the total income of A, B and C is

A - 3777.77

B - 3666.66

C - 3555.55

D - 3333.33

Answer : A

Explanation

12% of income of B = 20%of income of C
12%B=20%C
B=20/12C=5/3C=5/3*1000
10% income of A = 15% income of B
10%A=15%B
A=10/15B=2/3B =2/3*5/3*1000=10000/9
A+B+C=3777.77

Q 8 - 150% of 14+75% of 75 = ?

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 - In a library, 40% of the books are in English, 40% of the remaining books are in Hindi, remianing books are in Oriya. If there are 4800 books in Hindi, then what is the toatl number of books in the library?

A - 12000

B - 24000

C - 28000

D - 20000

Answer : D

Explanation

Let the total number of books in the library be x.
∴ Number of books in English = 40% of x = 40/100 * x = 2x/5
Remaining books =x – 2x/5 = 3x/5
Number of books in Hindi = 40% of 3x/5
= (40/100) * 3x/5
= 2/5 * 3x/5 
= 6x/25
As per question,
6x/25 = 4800
∴ x = 20000

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