If a:b = 5:5 and b:c = 5:9, then a:b:c = ? MCQ with Answer and Explanation

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

A. 10:10:18

B. 5:6:9

C. 5:5:9

D. 4:5:10

Answer: Option C

Solution (By JKSSB Mock Tests)

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

This question belongs to: Maths Ratio and Proportion

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Practice More Ratio and Proportion Questions

Question #1

If a:b = 3:6 and b:c = 6:7, then a:b:c = ?

A. 2:6:8

B. 6:12:14

C. 3:6:7

D. 3:7:7

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Correct Answer: Option C

Explanation:
Combine ratios: a:b = 3:6, b:c = 6:7 ⇒ a:b:c = 3:6:7.

This question belongs to: Maths Ratio and Proportion

Question #2

Two numbers are in the ratio 5:10 and their sum is 527. Find the numbers.

A. 160 and 361

B. 189 and 327

C. 175 and 350

D. 350 and 700

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Correct Answer: Option C

Explanation:
Numbers = 5k and 10k. 5k + 10k = 527 ⇒ k = 35. Thus, numbers are 175 and 350.

This question belongs to: Maths Ratio and Proportion

Question #3

If a:b = 7:4 and b:c = 4:4, then a:b:c = ?

A. 14:8:8

B. 6:4:5

C. 7:5:4

D. 7:4:4

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Correct Answer: Option D

Explanation:
Combine ratios: a:b = 7:4, b:c = 4:4 ⇒ a:b:c = 7:4:4.

This question belongs to: Maths Ratio and Proportion

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