Ratio and Proportion MCQs with Answer - Exercise I

Ques 1 Ratio and Proportion

If a : b = 2 : 3 and b : c = 5 : 7, find the value of a : b : c ?

A 5 : 7 : 13
B 10 : 15 : 17
C 10 : 15 : 21
D 7 : 15 : 13

Ques 2 Ratio and Proportion

What is the fourth proportional to 3, 7, 15.?

A 15
B 25
C 30
D 35

Ques 3 Ratio and Proportion

What is the fourth proportional to 3, 7, 15.?

A 2
B 4
C 16
D 32

Ques 4 Ratio and Proportion

Find the fourth proportion of 12,16,18?

A 22
B 24
C 28
D 30

Ques 5 Ratio and Proportion

Find the third proportion of 18,36?

A 22
B 24
C 48
D 72

Ques 6 Ratio and Proportion

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.

Find the ratio of total students in Commerce in B to total students in Science in A?

A 8 : 15
B 8 : 17
C 8 : 13
D 8 : 11