If a:b = 4:6 and b:c = 6:12, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 4:6 and b:c = 6:12, then a:b:c = ?

A. 8:12:24

B. 4:7:12

C. 4:6:12

D. 3:6:13

Answer: Option C

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 4:6, b:c = 6:12 ⇒ a:b:c = 4:6:12.

This question belongs to: Maths Ratio and Proportion

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Question #1

If a:b = 5:6 and b:c = 6:11, then a:b:c = ?

A. 5:7:11

B. 5:6:11

C. 4:6:12

D. 10:12:22

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:6, b:c = 6:11 ⇒ a:b:c = 5:6:11.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 2:9 and b:c = 9:4, then a:b:c = ?

A. 2:10:4

B. 4:18:8

C. 2:9:4

D. 1:9:5

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 2:9, b:c = 9:4 ⇒ a:b:c = 2:9:4.

This question belongs to: Maths Ratio and Proportion

Question #3

Two numbers are in ratio 11:6. Their difference is 42. What is their sum?

A. 527

B. 263

C. 633

D. 560

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Correct Answer: Option A

Explanation:
Numbers 11k, 6k. Difference |11-6|k = 42 ⇒ k = 8. Sum = (11+6)k ≈ 527.

This question belongs to: Maths Ratio and Proportion

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