Problems on Ages - Arithmetic Aptitude Questions and Answers

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The present ages of three persons in proportions 4 : 7 : 9. Eight years ago, the sum of their ages was 56. Find their present ages (in years).

8, 20, 28

16, 28, 36

20, 35, 45

None of these

Answer : Option B

Explanation :

Let their present ages be 4x, 7x and 9x years respectively.

Then, (4x - 8) + (7x - 8) + (9x - 8) = 56

20x = 80

x = 4.

Their present ages are 4x = 16 years, 7x = 28 years and 9x = 36 years respectively.

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