Two numbers are in the ratio 7:15 and their sum is 349. Find the numbers. MCQ with Answer and Explanation

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Two numbers are in the ratio 7:15 and their sum is 349. Find the numbers.

A. 115 and 199

B. 94 and 237

C. 210 and 450

D. 105 and 225

Answer: Option D

Solution (By JKSSB Mock Tests)

Numbers = 7k and 15k. 7k + 15k = 349 ⇒ k = 15. Thus, numbers are 105 and 225.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 2:7 and b:c = 7:6, then a:b:c = ?

A. 1:7:7

B. 4:14:12

C. 2:7:6

D. 2:8:6

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 2:7, b:c = 7:6 ⇒ a:b:c = 2:7:6.

This question belongs to: Maths Ratio and Proportion

Question #2

Ratio of present ages of A and B is 3:8. After 10 years, the ratio becomes 4:10. Present age of A is?

A. 44 years

B. 102 years

C. 51 years

D. 56 years

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Correct Answer: Option C

Explanation:
Let ages 3k and 8k. Then (3k + 10)/(8k + 10) = 4/10. Solving gives k ≈ 17, age of A = 3*17 = 51.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 7:9 and b:c = 9:5, then a:b:c = ?

A. 14:18:10

B. 7:10:5

C. 7:9:5

D. 6:9:6

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 7:9, b:c = 9:5 ⇒ a:b:c = 7:9:5.

This question belongs to: Maths Ratio and Proportion

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