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

Question

Share Report Error

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

A. 14:14:12

B. 6:7:7

C. 7:7:6

D. 7:8:6

Answer: Option C

Solution (By JKSSB Mock Tests)

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

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 = 4:5 and b:c = 5:4, then a:b:c = ?

A. 4:5:4

B. 8:10:8

C. 3:5:5

D. 4:6:4

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:5, b:c = 5:4 ⇒ a:b:c = 4:5:4.

This question belongs to: Maths Ratio and Proportion

Question #2

Ratio of present ages of A and B is 3:8. After 12 years, the ratio becomes 4:11. Present age of A is?

A. 65 years

B. 69 years

C. 74 years

D. 138 years

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option B

Explanation:
Let ages 3k and 8k. Then (3k + 12)/(8k + 12) = 4/11. Solving gives k ≈ 23, age of A = 3*23 = 69.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 6:5 and b:c = 5:4, then a:b:c = ?

A. 5:5:5

B. 12:10:8

C. 6:6:4

D. 6:5:4

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 6:5, b:c = 5:4 ⇒ a:b:c = 6:5:4.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs