Question

If the ratio of father and son is 5:1 then after 17 years. Ratio of father is 3:1 what is the age of his son

Answer 1

Let the present age of son be x yrs.

So the present age of father = 5x yrs.

After 17 yrs...

The age of son will be = x+17 yrs.

The age of father will be = 5x +17 yrs.

According to the problem
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$\frac{5x + 17}{x + 17} = 3 \\ or. \: 5x + 17 = 3x + 51 \\ or. \: 2x = 34 \\ or. \: x = 17$
So the present age of son is 17 yrs.

The present age of father = 5×17 =85 yrs.
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