If a:b = 4:7 and b:c = 7:4, then a:b:c = ? MCQ with Answer and Explanation

If a:b = 4:7 and b:c = 7:4, then a:b:c = ?
A. 4:8:4
B. 4:7:4
C. 3:7:5
D. 8:14:8
Answer: Option B
Solution (By JKExamLibrary)
Combine ratios: a:b = 4:7, b:c = 7:4 ⇒ a:b:c = 4:7:4.

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 = 5:8 and b:c = 8:6, then a:b:c = ?
A. 5:8:6
B. 5:9:6
C. 4:8:7
D. 10:16:12

Correct Answer: Option A


Explanation:
Combine ratios: a:b = 5:8, b:c = 8:6 ⇒ a:b:c = 5:8:6.

This question belongs to: Maths Ratio and Proportion
Question #2 Report Error
If a:b = 7:9 and b:c = 9:8, then a:b:c = ?
A. 6:9:9
B. 14:18:16
C. 7:9:8
D. 7:10:8

Correct Answer: Option C


Explanation:
Combine ratios: a:b = 7:9, b:c = 9:8 ⇒ a:b:c = 7:9:8.

This question belongs to: Maths Ratio and Proportion
Question #3 Report Error
If a:b = 6:3 and b:c = 3:4, then a:b:c = ?
A. 12:6:8
B. 6:4:4
C. 6:3:4
D. 5:3:5

Correct Answer: Option C


Explanation:
Combine ratios: a:b = 6:3, b:c = 3:4 ⇒ a:b:c = 6:3:4.

This question belongs to: Maths Ratio and Proportion