If a:b = 8:4 and b:c = 4:4, then a:b:c = ? MCQ with Answer and Explanation

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If a:b = 8:4 and b:c = 4:4, then a:b:c = ?

A. 7:4:5

B. 16:8:8

C. 8:4:4

D. 8:5:4

Answer: Option C

Solution (By JKExamLibrary)

Combine ratios: a:b = 8:4, b:c = 4:4 ⇒ a:b:c = 8:4:4.

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1 Report Error

Find the mean proportional between 10 and 48.

A. 42

B. 21

C. 24

D. 58

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Correct Answer: Option B

Explanation:
Mean proportional = √(10 × 48) = √(480) = 21.

This question belongs to: Maths Ratio and Proportion

Question #2 Report Error

Two numbers are in the ratio 5:9 and their sum is 612. Find the numbers.

A. 430 and 774

B. 240 and 375

C. 215 and 387

D. 196 and 394

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Correct Answer: Option C

Explanation:
Numbers = 5k and 9k. 5k + 9k = 612 ⇒ k = 43. Thus, numbers are 215 and 387.

This question belongs to: Maths Ratio and Proportion

Question #3 Report Error

Find the mean proportional between 4 and 45.

A. 13

B. 26

C. 16

D. 49

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Correct Answer: Option A

Explanation:
Mean proportional = √(4 × 45) = √(180) = 13.

This question belongs to: Maths Ratio and Proportion

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