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人気のある Word Problems >

Tommy is 4 years older than Ron. 8 years ago, Tommy was 5 times as old as Ron. Find Ron's present age.

解

T o mm y i s 4 ye a rs o l d er t han R o n . 8 ye a rs a g o, T o mm y w a s 5 t im es a s o l d a s R o n . F in d R o n^{'} s p rese n t a g e .

解

Ron^{'} s age is : 9

解答ステップ

Translate the problem into an equation:

x - 8 = 5 (x - 4 - 8)

x

を解く

x - 8 = 5 (x - 4 - 8) : x = 13

発見する Ron's age

: 9

Ron^{'} s age is : 9

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