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人気のある Word Problems >

John is 81 years older than Peter. In 3 years, John will be 4 times as old as Peter. How old is Peter now?

解

J o hn i s 81 ye a rs o l d er t han P e t er . I n 3 ye a rs, J o hn w i ll b e 4 t im es a s o l d a s P e t er . Ho w o l d i s P e t er n o w ?

解

Peter^{'} s age is : 24

解答ステップ

Translate the problem into an equation:

x + 3 = 4 (x - 81 + 3)

x

を解く

x + 3 = 4 (x - 81 + 3) : x = 105

発見する Peter's age

: 24

Peter^{'} s age is : 24

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