If a:b = 8:9 and b:c = 9:7, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 8:9 and b:c = 9:7, then a:b:c = ?

A. 8:9:7

B. 16:18:14

C. 8:10:7

D. 7:9:8

Answer: Option A

Solution (By JKSSB Mock Tests)

Combine ratios: a:b = 8:9, b:c = 9:7 ⇒ a:b:c = 8:9:7.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 3:5 and b:c = 5:6, then a:b:c = ?

A. 3:6:6

B. 2:5:7

C. 3:5:6

D. 6:10:12

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:5, b:c = 5:6 ⇒ a:b:c = 3:5:6.

This question belongs to: Maths Ratio and Proportion

Question #2

Milk and water are in ratio 6:6 in a 413 L mixture. Quantity of milk?

A. 206 L

B. 245 L

C. 412 L

D. 207 L

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Correct Answer: Option A

Explanation:
Total parts = 12. Milk = [6 / (6+6)] × 413 = 206 L.

This question belongs to: Maths Ratio and Proportion

Question #3

Milk and water are in ratio 3:5 in a 587 L mixture. Quantity of milk?

A. 367 L

B. 220 L

C. 248 L

D. 440 L

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Correct Answer: Option B

Explanation:
Total parts = 8. Milk = [3 / (3+5)] × 587 = 220 L.

This question belongs to: Maths Ratio and Proportion

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