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人気のある Word Problems >

the sum of the ages of a father and son is 76. four years ago, the father was 3 times as old as the son. find the present age of each

解

t h e s u m o f t h e a g es o f a f a t h er an d so n i s 76. f o u r ye a rs a g o, t h e f a t h er w a s 3 t im es a s o l d a s t h e so n . f in d t h e p rese n t a g e o f e a c h

解

Father^{'} s age is : 55

Boy^{'} s age is : 21

解答ステップ

Translate the problem into an equation:

x - 4 = 3 (76 - x - 4)

x

を解く

x - 4 = 3 (76 - x - 4) : x = 55

発見する age

Father^{'} s age is : 55

Boy^{'} s age is : 21

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