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  • The present ages of A, B and C are in proportions 4:5:9.
Question 1:
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
Feedback 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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