Two numbers are in ratio 9:11. Their difference is 54. What is their sum? MCQ with Answer and Explanation
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Question #1
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If a:b = 8:8 and b:c = 8:11, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 8:8, b:c = 8:11 ⇒ a:b:c = 8:8:11.
Combine ratios: a:b = 8:8, b:c = 8:11 ⇒ a:b:c = 8:8:11.
This question belongs to:
Maths
Ratio and Proportion
Question #2
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Ratio of present ages of A and B is 3:5. After 5 years, the ratio becomes 5:6. Present age of A is?
Correct Answer: Option B
Explanation:
Let ages 3k and 5k. Then (3k + 5)/(5k + 5) = 5/6. Solving gives k ≈ 14, age of A = 3*14 = 42.
Let ages 3k and 5k. Then (3k + 5)/(5k + 5) = 5/6. Solving gives k ≈ 14, age of A = 3*14 = 42.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 4:10 and b:c = 10:12, then a:b:c = ?
Correct Answer: Option A
Explanation:
Combine ratios: a:b = 4:10, b:c = 10:12 ⇒ a:b:c = 4:10:12.
Combine ratios: a:b = 4:10, b:c = 10:12 ⇒ a:b:c = 4:10:12.
This question belongs to:
Maths
Ratio and Proportion
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