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人気のある Word Problems >

Mike is 10 years old and his sister is 2 years old. how many years will mike be twice as old as his sister?

解

M ik e i s 10 ye a rs o l d an d hi s s i s t er i s 2 ye a rs o l d . h o w man y ye a rs w i ll mik e b e tw i ce a s o l d a s hi s s i s t er ?

解

Number of years from now : 6

解答ステップ

Translate the problem into an equation:

2 (2 + x) = 10 + x

x

を解く

2 (2 + x) = 10 + x : x = 6

Number of years from now : 6

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