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人気のある Word Problems >

Jonathan is now three times as old as his son is. Twelve years ago he was six times as old as his son was. Find the present ages.

解

Jonathan is now three times as old as his son is. Twelve years ago he was six times as old as his son was. Find the present ages.

解

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

解答ステップ

Translate the problem into an equation:

3 x - 12 = 6 (x - 12)

x

を解く

3 x - 12 = 6 (x - 12) : x = 20

発見する age

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

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