If a:b = 3:9 and b:c = 9:7, then a:b:c = ? MCQ with Answer and Explanation

Question

Share Report Error

If a:b = 3:9 and b:c = 9:7, then a:b:c = ?

A. 3:10:7

B. 6:18:14

C. 3:9:7

D. 2:9:8

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 3:9, b:c = 9:7 ⇒ a:b:c = 3:9:7.

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 = 8:7 and b:c = 7:4, then a:b:c = ?

A. 7:7:5

B. 8:8:4

C. 16:14:8

D. 8:7:4

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 8:7, b:c = 7:4 ⇒ a:b:c = 8:7:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:8 and b:c = 8:9, then a:b:c = ?

A. 5:9:9

B. 10:16:18

C. 4:8:10

D. 5:8:9

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:9 ⇒ a:b:c = 5:8:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in the ratio 8:14 and their sum is 276. Find the numbers.

A. 84 and 185

B. 192 and 336

C. 125 and 139

D. 96 and 168

View Answer & Solution Discuss

Get Complete Subject PDF for Maths

Correct Answer: Option D

Explanation:
Numbers = 8k and 14k. 8k + 14k = 276 ⇒ k = 12. Thus, numbers are 96 and 168.

This question belongs to: Maths Ratio and Proportion

Explore All Ratio and Proportion MCQs