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人気のある Word Problems >

Joe is 12 years old. His mother is four times older than him. In x year's time, the mother will be three times as old as the son. Find the value of x

解

J oe i s 12 ye a rs o l d . H i s m o t h er i s f o u r t im es o l d er t han him . I n x ye a r^{'} s t im e, t h e m o t h er w i ll b e t h ree t im es a s o l d a s t h e so n . F in d t h e v a l u e o f x

解

Boy^{'} s age is : 16

Joe^{'} s age is : 12

Mother^{'} s age is : 48

解答ステップ

Translate the problem into an equation:

3 x = 4 \cdot 12

x

を解く

3 x = 4 \cdot 12 : x = 16

発見する age

Boy^{'} s age is : 16

Joe^{'} s age is : 12

Mother^{'} s age is : 48

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