Two numbers are in ratio 6:8. Their difference is 69. 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 B
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 6:4. After 5 years, the ratio becomes 9:7. Present age of A is?
Correct Answer: Option A
Explanation:
Let ages 6k and 4k. Then (6k + 5)/(4k + 5) = 9/7. Solving gives k ≈ 19, age of A = 6*19 = 114.
Let ages 6k and 4k. Then (6k + 5)/(4k + 5) = 9/7. Solving gives k ≈ 19, age of A = 6*19 = 114.
This question belongs to:
Maths
Ratio and Proportion
Question #3
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If a:b = 4:4 and b:c = 4:8, then a:b:c = ?
Correct Answer: Option D
Explanation:
Combine ratios: a:b = 4:4, b:c = 4:8 ⇒ a:b:c = 4:4:8.
Combine ratios: a:b = 4:4, b:c = 4:8 ⇒ a:b:c = 4:4:8.
This question belongs to:
Maths
Ratio and Proportion
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