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受欢迎的 Word Problems >

After 1 year, the father's age will be 4 times the age of his son. After 5 years, the father's age will be three times the age of his son. Find the age of the father and his son.

解答

A f t er 1 ye a r, t h e f a t h e r^{'} s a g e w i ll b e 4 t im es t h e a g e o f hi s so n . A f t er 5 ye a rs, t h e f a t h e r^{'} s a g e w i ll b e t h ree t im es t h e a g e o f hi s so n . F in d t h e a g e o f t h e f a t h er an d hi s so n .

解答

Father^{'} s age is : 31

Boy^{'} s age is : 7

求解步骤

Translate the problem into an equation:

x + 1 = 4 (y + 1), x + 5 = 3 (y + 5)

x + 1 = 4 (y + 1), x + 5 = 3 (y + 5) : x = 31, y = 7

Father^{'} s age is : 31

Boy^{'} s age is : 7

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