Two numbers are in ratio 7:5. Their difference is 102. What is their sum? MCQ with Answer and Explanation

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Two numbers are in ratio 7:5. Their difference is 102. What is their sum?

A. 252

B. 546

C. 647

D. 504

Answer: Option D

Solution (By JKSSB Mock Tests)

Numbers 7k, 5k. Difference |7-5|k = 102 ⇒ k = 51. Sum = (7+5)k ≈ 504.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

Find the mean proportional between 20 and 74.

A. 76

B. 38

C. 94

D. 41

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Correct Answer: Option B

Explanation:
Mean proportional = √(20 × 74) = √(1480) = 38.

This question belongs to: Maths Ratio and Proportion

Question #2

If a:b = 5:8 and b:c = 8:12, then a:b:c = ?

A. 10:16:24

B. 5:8:12

C. 5:9:12

D. 4:8:13

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 5:8, b:c = 8:12 ⇒ a:b:c = 5:8:12.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 4:10 and b:c = 10:12, then a:b:c = ?

A. 4:11:12

B. 4:10:12

C. 8:20:24

D. 3:10:13

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 4:10, b:c = 10:12 ⇒ a:b:c = 4:10:12.

This question belongs to: Maths Ratio and Proportion

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