If a:b = 7:4 and b:c = 4:10, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 7:4 and b:c = 4:10, then a:b:c = ?

A. 6:4:11

B. 14:8:20

C. 7:5:10

D. 7:4:10

Answer: Option D

Solution (By JKExamLibrary)

Combine ratios: a:b = 7:4, b:c = 4:10 ⇒ a:b:c = 7:4:10.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1 Report Error

If a:b = 2:4 and b:c = 4:7, then a:b:c = ?

A. 2:5:7

B. 2:4:7

C. 4:8:14

D. 1:4:8

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 2:4, b:c = 4:7 ⇒ a:b:c = 2:4:7.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 8:6 and b:c = 6:9, then a:b:c = ?

A. 8:6:9

B. 7:6:10

C. 8:7:9

D. 16:12:18

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 8:6, b:c = 6:9 ⇒ a:b:c = 8:6:9.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

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

A. 16:14:8

B. 8:8:4

C. 8:7:4

D. 7:7:5

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Correct Answer: Option C

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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