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人気のある Word Problems >

Mary’s father is three times as old as Mary. Six years ago, father’s age was five times Mary’s age. How old is her father now?

解

M a ry ’ s f a t h er i s t h ree t im es a s o l d a s M a ry . S i x ye a rs a g o, f a t h er ’ s a g e w a s f i v e t im es M a ry ’ s a g e . Ho w o l d i s h er f a t h er n o w ?

解

Father^{'} s age is : 36

解答ステップ

Translate the problem into an equation:

3 x - 6 = 5 (x - 6)

x

を解く

3 x - 6 = 5 (x - 6) : x = 12

発見する Father's age

: 36

Father^{'} s age is : 36

人気の例

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