If a:b = 3:10 and b:c = 10:4, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 3:10 and b:c = 10:4, then a:b:c = ?

A. 2:10:5

B. 3:11:4

C. 6:20:8

D. 3:10:4

Answer: Option D

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 3:10, b:c = 10:4 ⇒ a:b:c = 3:10:4.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 3:10 and b:c = 10:8, then a:b:c = ?

A. 6:20:16

B. 3:11:8

C. 2:10:9

D. 3:10:8

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 3:10, b:c = 10:8 ⇒ a:b:c = 3:10:8.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 3:5 and b:c = 5:9, then a:b:c = ?

A. 3:6:9

B. 3:5:9

C. 6:10:18

D. 2:5:10

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 3:5, b:c = 5:9 ⇒ a:b:c = 3:5:9.

This question belongs to: Maths Ratio and Proportion

Question #3

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

A. 16:14:8

B. 7:7:5

C. 8:8:4

D. 8:7:4

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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

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