Two numbers are in the ratio 11:9 and their sum is 682. Find the numbers. MCQ with Answer and Explanation
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Question #1
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Ratio of present ages of A and B is 3:7. After 5 years, the ratio becomes 5:10. Present age of A is?
Correct Answer: Option C
Explanation:
Let ages 3k and 7k. Then (3k + 5)/(7k + 5) = 5/10. Solving gives k ≈ 24, age of A = 3*24 = 72.
Let ages 3k and 7k. Then (3k + 5)/(7k + 5) = 5/10. Solving gives k ≈ 24, age of A = 3*24 = 72.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Find the mean proportional between 4 and 66.
Correct Answer: Option A
Explanation:
Mean proportional = √(4 × 66) = √(264) = 16.
Mean proportional = √(4 × 66) = √(264) = 16.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 8:6 and b:c = 6:11, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 8:6, b:c = 6:11 ⇒ a:b:c = 8:6:11.
Combine ratios: a:b = 8:6, b:c = 6:11 ⇒ a:b:c = 8:6:11.
This question belongs to:
Maths
Ratio and Proportion
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