If a:b = 7:8 and b:c = 8:12, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 7:8 and b:c = 8:12, then a:b:c = ?

A. 7:8:12

B. 6:8:13

C. 7:9:12

D. 14:16:24

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 7:8, b:c = 8:12 ⇒ a:b:c = 7:8:12.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 2:8 and b:c = 8:4, then a:b:c = ?

A. 4:16:8

B. 2:9:4

C. 1:8:5

D. 2:8:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 2:8, b:c = 8:4 ⇒ a:b:c = 2:8:4.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 4:3 and b:c = 3:12, then a:b:c = ?

A. 4:3:12

B. 4:4:12

C. 8:6:24

D. 3:3:13

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:3, b:c = 3:12 ⇒ a:b:c = 4:3:12.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:10 and b:c = 10:6, then a:b:c = ?

A. 8:20:12

B. 4:11:6

C. 3:10:7

D. 4:10:6

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 4:10, b:c = 10:6 ⇒ a:b:c = 4:10:6.

This question belongs to: Maths Ratio and Proportion

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