Two numbers are in ratio 5:12. Their difference is 93. What is their sum? MCQ with Answer and Explanation

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Two numbers are in ratio 5:12. Their difference is 93. What is their sum?

A. 127

B. 313

C. 404

D. 255

Answer: Option D

Solution (By JKSSB Mock Tests)

Numbers 5k, 12k. Difference |5-12|k = 93 ⇒ k = 13. Sum = (5+12)k ≈ 255.

This question belongs to: Maths Ratio and Proportion

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Question #1

Two numbers are in ratio 10:12. Their difference is 61. What is their sum?

A. 198

B. 99

C. 238

D. 279

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Correct Answer: Option A

Explanation:
Numbers 10k, 12k. Difference |10-12|k = 61 ⇒ k = 30. Sum = (10+12)k ≈ 198.

This question belongs to: Maths Ratio and Proportion

Question #2

Ratio of present ages of A and B is 7:8. After 4 years, the ratio becomes 10:11. Present age of A is?

A. 138 years

B. 266 years

C. 128 years

D. 133 years

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Correct Answer: Option D

Explanation:
Let ages 7k and 8k. Then (7k + 4)/(8k + 4) = 10/11. Solving gives k ≈ 19, age of A = 7*19 = 133.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 2:3 and b:c = 3:11, then a:b:c = ?

A. 4:6:22

B. 2:3:11

C. 2:4:11

D. 1:3:12

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Correct Answer: Option B

Explanation:
Combine ratios: a:b = 2:3, b:c = 3:11 ⇒ a:b:c = 2:3:11.

This question belongs to: Maths Ratio and Proportion

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