Percentages Quiz Set 014 | Maths Aptitude Quiz Questions and Mock Test on Percentages Set 14 | mock tests for Bank PO, SSC Exams, SO Clerical Exam, GATE Exam, LIC AO, GIC AO, etc.

**Your Score**
Correct Answers:
Wrong Answers:
Unattempted:

Question 1

Mr. X who spends 69% of his salary is able to save Rs. 527. What is his salary?

Rs. 1700.

Rs. 1800.

Rs. 1600.

Rs. 1900.

Soln.
Ans: a

Let the salary be x. His saving% is 100 - 69 = 31, so 31% of x = 527, which gives x = $527/31$ × 100 = Rs. 1700.

Solution | Discuss! | Chapters»

Question 2

Two numbers are, respectively, 5% and 25% less than a third number. What percent is the second of the first?

$78{18/19}$ %.

$84{7/18}$ %.

$70{11/21}$ %.

$74{1/7}$ %.

Soln.
Ans: a

If the third number is 100, first number is (100 - 5) = 95, and the second number is (100 - 25) = 75. The required ratio is $75/95$ × 100 = ${1500/19}$, which is same as: $78{18/19}$%.

Solution | Discuss! | Chapters»

Question 3

A number is first increased by 60%. By what percent must it be reduced so as to restore it to its previous value?

$37{1/2}$ %.

$38{1/2}$ %.

$36{1/2}$ %.

$20{1/4}$ %.

Soln.
Ans: a

Let us derive the shortcut formula first, so that you can remember it and use it when the need arises. Suppose the number is 100, and let the increase be x%. The number becomes 100 + x. Let us suppose that it has to be reduced by p% to restore it to 100. Then, (100 + x) - p × $(100 + x)/100$ = 100. We can cancel away 100, and easily simplify it to p = ${100 × x}/{100 + x}$ = ${100 × 60}/{100 + 60}$ = ${75/2}$, which is same as: $37{1/2}$%.

Solution | Discuss! | Chapters»