Two numbers are in ratio 7:12. Their difference is 101. What is their sum? MCQ with Answer and Explanation

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Two numbers are in ratio 7:12. Their difference is 101. What is their sum?

A. 423

B. 304

C. 152

D. 334

Answer: Option B

Solution (By JKSSB Mock Tests)

Numbers 7k, 12k. Difference |7-12|k = 101 ⇒ k = 20. Sum = (7+12)k ≈ 304.

This question belongs to: Maths Ratio and Proportion

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Question #1

Two numbers are in ratio 9:11. Their difference is 102. What is their sum?

A. 422

B. 200

C. 400

D. 482

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Correct Answer: Option C

Explanation:
Numbers 9k, 11k. Difference |9-11|k = 102 ⇒ k = 51. Sum = (9+11)k ≈ 400.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:5 and b:c = 5:9, then a:b:c = ?

A. 4:5:10

B. 5:5:9

C. 5:6:9

D. 10:10:18

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:5, b:c = 5:9 ⇒ a:b:c = 5:5:9.

This question belongs to: Maths Ratio and Proportion

Question #3

Milk and water are in ratio 5:7 in a 476 L mixture. Quantity of milk?

A. 198 L

B. 230 L

C. 396 L

D. 278 L

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Correct Answer: Option A

Explanation:
Total parts = 12. Milk = [5 / (5+7)] × 476 = 198 L.

This question belongs to: Maths Ratio and Proportion

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