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Популярный >

a father is 4 times as old as his son. in 20 years the father will be twice as old as his son

Решение

a father is 4 times as old as his son. in 20 years the father will be twice as old as his son

Решение

Boy^{'} s age is : 10

Father^{'} s age is : 40

Шаги решения

Translate the problem into an equation:

4 x + 20 = 2 (x + 20)

Решите для

x, 4 x + 20 = 2 (x + 20) : x = 10

Найдите age

Boy^{'} s age is : 10

Father^{'} s age is : 40

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