If a:b = 8:4 and b:c = 4:11, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 8:4 and b:c = 4:11, then a:b:c = ?

A. 8:4:11

B. 8:5:11

C. 16:8:22

D. 7:4:12

Answer: Option A

Solution (By JKExamLibrary)

Combine ratios: a:b = 8:4, b:c = 4:11 ⇒ a:b:c = 8:4:11.

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 = 5:6 and b:c = 6:9, then a:b:c = ?

A. 5:6:9

B. 5:7:9

C. 10:12:18

D. 4:6:10

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 5:6, b:c = 6:9 ⇒ a:b:c = 5:6:9.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

If a:b = 7:6 and b:c = 6:4, then a:b:c = ?

A. 7:7:4

B. 6:6:5

C. 14:12:8

D. 7:6:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 7:6, b:c = 6:4 ⇒ a:b:c = 7:6:4.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

Two numbers are in ratio 12:7. Their difference is 51. What is their sum?

A. 504

B. 228

C. 596

D. 456

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Correct Answer: Option D

Explanation:
Numbers 12k, 7k. Difference |12-7|k = 51 ⇒ k = 10. Sum = (12+7)k ≈ 456.

This question belongs to: Maths Ratio and Proportion

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