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受欢迎的 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.

解答

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.

解答

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

求解步骤

Translate the problem into an equation:

3 x - 12 = 6 (x - 12)

求解

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

找到 age

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

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