Two numbers are in ratio 9:12. Their difference is 74. What is their sum? MCQ with Answer and Explanation

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Two numbers are in ratio 9:12. Their difference is 74. What is their sum?

A. 105

B. 355

C. 210

D. 270

Answer: Option C

Solution (By JKSSB Mock Tests)

Numbers 9k, 12k. Difference |9-12|k = 74 ⇒ k = 24. Sum = (9+12)k ≈ 210.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 2:10 and b:c = 10:12, then a:b:c = ?

A. 1:10:13

B. 2:10:12

C. 2:11:12

D. 4:20:24

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 2:10, b:c = 10:12 ⇒ a:b:c = 2:10:12.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 3:9 and b:c = 9:10, then a:b:c = ?

A. 3:10:10

B. 2:9:11

C. 3:9:10

D. 6:18:20

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:9, b:c = 9:10 ⇒ a:b:c = 3:9:10.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 3:8 and b:c = 8:4, then a:b:c = ?

A. 3:8:4

B. 6:16:8

C. 2:8:5

D. 3:9:4

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Correct Answer: Option A

Explanation:
Combine ratios: a:b = 3:8, b:c = 8:4 ⇒ a:b:c = 3:8:4.

This question belongs to: Maths Ratio and Proportion

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