Aptitude - Questions & Answers

Aptitude - Percentages Online Quiz

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.

Q 1 - 860% of 50 + 50% of 860 = ?

Answer : D

Explanation

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

Q 2 - If 25% of a number is subtracted from a second number, the second number reduces to its five-sixth. What is the ratio of the first number to the second number?

Answer : C

Explanation

Let p and q be the two numbers.
Then, q - 25% of p = ⁵⁄₆q
q - ⁵⁄₆q = ²⁵⁄₁₀₀p
^p⁄_q = ⁴⁄₆
Therefore, p : q = 2:3

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?

Answer : B

Explanation

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

Q 4 - Two students appeared at an examination. One of them secured 9 marks more than the other and his marks was 56% of the sum of marks. The marks obtained by them are?

Answer : B

Explanation

Let m + 9 and m be the marks of two students
Then, m + 9 = ⁵⁶⁄₁₀₀(m + 9 + m)
→ 3m = 99
→ m = 33
Therefore, marks = (m + 9) = 42 and 33.

Q 5 - In an examination, there are 3 papers and a candidate has to get 35% of the total to pass. In one paper, he gets 62 out of 150 and in the second 35 out of 150. How much must he get, out of 180 in the third paper to just qualify for a pass?

Answer : B

Explanation

Let z be the marks required.
→ 62 + 35 + x = 35% of 480
Therefore, z = 71

Q 6 - A rectangle has width 'a' and length 'b'. If the width is decreased by 20% and length is increased by 10%, what is the area of the new rectangle in percentage compared to 'ab'?

Answer : A

Explanation

New width = (80/100)*a = 4a/5
New length = (110/100)*b = 11b/10
Area of new rectangle = 4a/5 * 11b/10
= 22ab/25
∴ Area of new rectangle in percentage compared to ab = (22ab/25)/25 * 100 = 88%

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

Answer : A

Explanation

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

Q 8 - The price of an article is cut by 20% .to restore it to the former value, the new price must be increased by

Answer : B

Explanation

Let original price = Rs. 100
Reduced price = Rs. 80
Increase on Rs.80=Rs.20 
Increase on Rs. 100=20/80*100%=25%

Q 9 - What percent of 2/7 is 1/35?

Answer : B

Explanation

 Let's have x % of 2/7 = 1/35
=> x/100 * (2/7) = 1/35 
=>x = 1/35 * 7/2 * 100
= 10%

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?

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

aptitude_percentages.htm

Print Page