Two years ago, a father was four times older than his son. In twelve years’ time, he will be twice as old as his son. Find the ages of both the father and his son.

해법

해법

Father^{'} s age is : 30

Boy^{'} s age is : 9

솔루션 단계

Translate the problem into an equation:

x - 2 = 4 (y - 2), x + 12 = 2 (y + 12)

x - 2 = 4 (y - 2), x + 12 = 2 (y + 12) : x = 30, y = 9

Father^{'} s age is : 30

Boy^{'} s age is : 9

Two years ago, a father was four times older than his son. In twelve years’ time, he will be twice as old as his son. Find the ages of both the father and his son.

해법

해법

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