Question
The ratio of age of Sahil and his son is 7:2. If the
difference of their ages 7 year ago was 25, then find the sum of ages of Sahil and his son 12 year hence?Solution
Let the present age of Sahil and his son be 7x and 2x respectively. => 7x – 2x = 25 ∴ x = 5 ∴ Required sum = 9 × 5 + 24 = 69
Solve for x in the equation: 3(x + 2) + 2(2x - 5) = 5x + 9
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