If a:b = 5:6 and b:c = 6:11, then a:b:c = ? MCQ with Answer and Explanation

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

A. 10:12:22

B. 5:6:11

C. 4:6:12

D. 5:7:11

Answer: Option B

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Question #1

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Two numbers are in ratio 11:5. Their difference is 105. What is their sum?

A. 368

B. 320

C. 414

D. 160

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Correct Answer: Option B

Explanation:
Numbers 11k, 5k. Difference |11-5|k = 105 ⇒ k = 17. Sum = (11+5)k ≈ 320.

This question belongs to: Maths Ratio and Proportion

Question #2

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Milk and water are in ratio 5:4 in a 536 L mixture. Quantity of milk?

A. 239 L

B. 297 L

C. 594 L

D. 329 L

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Correct Answer: Option B

Explanation:
Total parts = 9. Milk = [5 / (5+4)] × 536 = 297 L.

This question belongs to: Maths Ratio and Proportion

Question #3

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If a:b = 4:9 and b:c = 9:11, then a:b:c = ?

A. 4:9:11

B. 4:10:11

C. 8:18:22

D. 3:9:12

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 4:9, b:c = 9:11 ⇒ a:b:c = 4:9:11.

This question belongs to: Maths Ratio and Proportion

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