# Percentage Quants Exercise I

Ques 1 Percentage

A is 150% of B and B is 40% of C. If A+B+C=20, then the value of 2B+3C – 4A is equal to
a) 11
b) 12
c) 13
d) 14

d is the correct option

Given that A is 150% of B, so A = 150/100 * B = 3B/2
Given that B is 40% of C, so B = 40/100 * C = 2C/5
Also given that A + B + C = 20
Substituting the values of A and B in terms of C, we get
3C/2 + 2C/5 + C = 20
10C/10 = 20
C = 2
So, B = 4 and A = 6
Therefore, 2B + 3C - 4A = 2 * 4 + 3 * 2 - 4 * 6 = 8 + 6 - 24 = 14.
Hence, the correct answer is option (d).

Ques 2 Percentage

Two numbers are less than a third number by 37% and 30%, respectively. By what percentage is the second number more than the first?
a) 10/9
b) 100/9
c) 100/3
d) 10

b is the correct option

Ques 3 Percentage

Gaurav earns 800 per day. After some weeks, he earns 960 per day. What is the percentage increase in his daily earnings?
a) 14%
b) 18%
c) 16%
d) 20%

d is the correct option

The original earnings is 800, and the new earnings is 960. The difference is 960 - 800 = 160.
The percentage increase=(Increase / Original) * 100%
The percentage increase=(160 / 800) * 100% = 20%

Ques 4 Percentage

The average percentage of girls in class X examination in a school is 85% and that of boys is 83%. The average pass percentage of all boys and girls in class X of that school is 83.7% Find the percentage of the number of girls in class X of that school.?
a) 30%
b) 40%
c) 35%
d) 45%

c is the correct option

Ques 5 Percentage

A person saves 25% of his income. If his income increases by 20% and his saving remains the same, then what will be the increased percentage of his expenditure?
a) 80/3
b) 26/13
c) 20//9
d) 30/11

a is the correct option

Ques 6 Percentage

A, B and C are three positive numbers such that A is 70% of B, and B is 40% of C. If the sum of all three numbers is 336, then 15% of the sum of B and C is
a) 44
b) 48
c) 32
d) 42

d is the correct option

Ques 7 Percentage

Renu spends 68% of her income. When her income increases by 40%, she increases her expenditure by 30%. Her savings are increased by
a) 37.98%
b) 62.5%
c) 61.25%
d) 51.6%

c is the correct option

Ques 8 Percentage

There are 450 students in a school and there are two sections A & B in the school. There are three streams in each section i.e., Art, Science & Commerce. (75/4)% of total students in A are in Commerce and (200/7)% of total students in B are in Science. Sum of total students in Commerce in A & total students in Science in B is 105. (400/21)% of total students in B are in Commerce and 50% of total students in A are in Art.

Total students in Art in A is what percent more than total students in Science in B?
a) 75%
b) 90%
c) 100%
d) 110%

c is the correct option