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. 5:7:11

B. 5:6:11

C. 4:6:12

D. 10:12:22

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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Milk and water are in ratio 9:7 in a 533 L mixture. Quantity of milk?

A. 299 L

B. 234 L

C. 598 L

D. 336 L

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Correct Answer: Option A

Explanation:
Total parts = 16. Milk = [9 / (9+7)] × 533 = 299 L.

This question belongs to: Maths Ratio and Proportion

Question #2

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Milk and water are in ratio 8:2 in a 156 L mixture. Quantity of milk?

A. 248 L

B. 32 L

C. 172 L

D. 124 L

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Correct Answer: Option D

Explanation:
Total parts = 10. Milk = [8 / (8+2)] × 156 = 124 L.

This question belongs to: Maths Ratio and Proportion

Question #3

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If a:b = 2:5 and b:c = 5:10, then a:b:c = ?

A. 2:6:10

B. 4:10:20

C. 2:5:10

D. 1:5:11

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 2:5, b:c = 5:10 ⇒ a:b:c = 2:5:10.

This question belongs to: Maths Ratio and Proportion

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