Two numbers are in ratio 10:4. Their difference is 127. What is their sum? MCQ with Answer and Explanation

Two numbers are in ratio 10:4. Their difference is 127. What is their sum?
A. 175
B. 449
C. 388
D. 350
Answer: Option D
Solution (By JKExamLibrary)
Numbers 10k, 4k. Difference |10-4|k = 127 ⇒ k = 21. Sum = (10+4)k ≈ 350.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1 Report Error
If a:b = 8:10 and b:c = 10:10, then a:b:c = ?
A. 16:20:20
B. 7:10:11
C. 8:11:10
D. 8:10:10

Correct Answer: Option D


Explanation:
Combine ratios: a:b = 8:10, b:c = 10:10 ⇒ a:b:c = 8:10:10.

This question belongs to: Maths Ratio and Proportion
Question #2 Report Error
Ratio of present ages of A and B is 7:8. After 6 years, the ratio becomes 8:9. Present age of A is?
A. 105 years
B. 97 years
C. 210 years
D. 110 years

Correct Answer: Option A


Explanation:
Let ages 7k and 8k. Then (7k + 6)/(8k + 6) = 8/9. Solving gives k ≈ 15, age of A = 7*15 = 105.

This question belongs to: Maths Ratio and Proportion
Question #3 Report Error
If a:b = 6:8 and b:c = 8:8, then a:b:c = ?
A. 6:8:8
B. 5:8:9
C. 6:9:8
D. 12:16:16

Correct Answer: Option A


Explanation:
Combine ratios: a:b = 6:8, b:c = 8:8 ⇒ a:b:c = 6:8:8.

This question belongs to: Maths Ratio and Proportion