If a:b = 4:5 and b:c = 5:12, then a:b:c = ? MCQ with Answer and Explanation
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Question #1
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If a:b = 4:8 and b:c = 8:8, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 4:8, b:c = 8:8 ⇒ a:b:c = 4:8:8.
Combine ratios: a:b = 4:8, b:c = 8:8 ⇒ a:b:c = 4:8:8.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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If a:b = 2:4 and b:c = 4:7, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 2:4, b:c = 4:7 ⇒ a:b:c = 2:4:7.
Combine ratios: a:b = 2:4, b:c = 4:7 ⇒ a:b:c = 2:4:7.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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Two numbers are in ratio 8:12. Their difference is 61. What is their sum?
Correct Answer: Option D
Explanation:
Numbers 8k, 12k. Difference |8-12|k = 61 ⇒ k = 15. Sum = (8+12)k ≈ 320.
Numbers 8k, 12k. Difference |8-12|k = 61 ⇒ k = 15. Sum = (8+12)k ≈ 320.
This question belongs to:
Maths
Ratio and Proportion
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