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

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

A. 4:4:9

B. 8:8:18

C. 4:5:9

D. 3:4:10

Answer: Option A

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 5:8 and b:c = 8:5, then a:b:c = ?

A. 10:16:10

B. 5:8:5

C. 4:8:6

D. 5:9:5

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:5 ⇒ a:b:c = 5:8:5.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in ratio 6:4. Their difference is 60. What is their sum?

A. 381

B. 350

C. 175

D. 497

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Correct Answer: Option B

Explanation:
Numbers 6k, 4k. Difference |6-4|k = 60 ⇒ k = 30. Sum = (6+4)k ≈ 350.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 6:9 and b:c = 9:10, then a:b:c = ?

A. 5:9:11

B. 6:10:10

C. 12:18:20

D. 6:9:10

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 6:9, b:c = 9:10 ⇒ a:b:c = 6:9:10.

This question belongs to: Maths Ratio and Proportion

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