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Quantitative Aptitude

Percentages

The average a...

Question

The average age of three boys is 25 years and their ages are in the proportion 3:5:7. The age of the youngest boy is

A

15

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B

25

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C

35

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D

10

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E

None

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Solution

The correct option is A
15

Let 3x,5x,7x be the ages Solving the given condition, We get 15,25,35 years

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