The ratio of age of A and his son is 9:5. If the difference of their ages 6 year ago is 12, then find the sum of ages of A and his son 15 year hence?
Let the present age of Raman and his son be 9x and 5x respectively. => 9x – 5x = 12 ∴ x = 3 Required sum = 14 × 3 + 30 = 72 years
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