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The sum of the ages of a father and son is 56. Four years ago the father was 3 times as old as the son. Find the present age of each.

Solution

The sum of the ages of a father and son is 56. Four years ago the father was 3 times as old as the son. Find the present age of each.

Solution

Father^{'} s age is : 40

Boy^{'} s age is : 16

Solution steps

Translate the problem into an equation:

x - 4 = 3 (56 - x - 4)

Solve for

x, x - 4 = 3 (56 - x - 4) : x = 40

Find age

Father^{'} s age is : 40

Boy^{'} s age is : 16

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