Ratio of present ages of A and B is 4:6. After 9 years, the ratio becomes 7:8. Present age of A is? MCQ with Answer and Explanation
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Practice More Ratio and Proportion Questions
Question #1
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Find the mean proportional between 30 and 37.
Correct Answer: Option D
Explanation:
Mean proportional = √(30 × 37) = √(1110) = 33.
Mean proportional = √(30 × 37) = √(1110) = 33.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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If a:b = 6:4 and b:c = 4:5, then a:b:c = ?
Correct Answer: Option C
Explanation:
Combine ratios: a:b = 6:4, b:c = 4:5 ⇒ a:b:c = 6:4:5.
Combine ratios: a:b = 6:4, b:c = 4:5 ⇒ a:b:c = 6:4:5.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 5:8 and b:c = 8:12, then a:b:c = ?
Correct Answer: Option B
Explanation:
Combine ratios: a:b = 5:8, b:c = 8:12 ⇒ a:b:c = 5:8:12.
Combine ratios: a:b = 5:8, b:c = 8:12 ⇒ a:b:c = 5:8:12.
This question belongs to:
Maths
Ratio and Proportion
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