Aptitude | Arithmetic Aptitude 3 | Question 4

The present ages of A, B and C are in proportions 4:5:9. Nine years ago, sum of their ages was 45 years. Find their present ages in years

(A) 15,20,35
(B) 20,24,36
(C) 20,25,45
(D) 16,20,36


Answer: (D)

Explanation: Let the current ages of A, B and C be ax years, 5x years and 9x respectively.

Then (4x-9) + (5x-9) + (9x-9) =45
∴ 18x – 27 = 45
∴ 18x = 72
∴ x = 4

Present ages of A, B and C are 4x = 16, 5x = 20, 9x = 36 respectively.


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