If a:b = 4:5 and b:c = 5:9, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 4:5 and b:c = 5:9, then a:b:c = ?

A. 4:6:9

B. 4:5:9

C. 8:10:18

D. 3:5:10

Answer: Option B

Solution (By JKExamLibrary)

Combine ratios: a:b = 4:5, b:c = 5:9 ⇒ a:b:c = 4:5:9.

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 = 2:6 and b:c = 6:10, then a:b:c = ?

A. 2:6:10

B. 1:6:11

C. 4:12:20

D. 2:7:10

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 2:6, b:c = 6:10 ⇒ a:b:c = 2:6:10.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 3:6 and b:c = 6:4, then a:b:c = ?

A. 6:12:8

B. 2:6:5

C. 3:6:4

D. 3:7:4

View Answer & Solution Discuss

Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:6, b:c = 6:4 ⇒ a:b:c = 3:6:4.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

If a:b = 2:6 and b:c = 6:11, then a:b:c = ?

A. 2:6:11

B. 1:6:12

C. 4:12:22

D. 2:7:11

View Answer & Solution Discuss

Correct Answer: Option A

Explanation:
Combine ratios: a:b = 2:6, b:c = 6:11 ⇒ a:b:c = 2:6:11.

This question belongs to: Maths Ratio and Proportion

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