If a:b = 8:7 and b:c = 7:6, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 8:7 and b:c = 7:6, then a:b:c = ?

A. 16:14:12

B. 7:7:7

C. 8:8:6

D. 8:7:6

Answer: Option D

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:7, b:c = 7:6 ⇒ a:b:c = 8:7:6.

This question belongs to: Maths Ratio and Proportion

Request complete Subject PDF

Discuss this Question (0)

No comments yet. Be the first to start the discussion!

Practice More Ratio and Proportion Questions

Question #1

If a:b = 6:10 and b:c = 10:8, then a:b:c = ?

A. 6:10:8

B. 5:10:9

C. 6:11:8

D. 12:20:16

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 6:10, b:c = 10:8 ⇒ a:b:c = 6:10:8.

This question belongs to: Maths Ratio and Proportion

Question #2

Ratio of present ages of A and B is 7:8. After 4 years, the ratio becomes 10:11. Present age of A is?

A. 128 years

B. 266 years

C. 133 years

D. 138 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option C

Explanation:
Let ages 7k and 8k. Then (7k + 4)/(8k + 4) = 10/11. Solving gives k ≈ 19, age of A = 7*19 = 133.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 2:8 and b:c = 8:12, then a:b:c = ?

A. 4:16:24

B. 2:9:12

C. 1:8:13

D. 2:8:12

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 2:8, b:c = 8:12 ⇒ a:b:c = 2:8:12.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs