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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.

Solution

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.

Solution

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

Solution steps

Translate the problem into an equation:

3 x - 12 = 6 (x - 12)

Solve for

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

Find age

Son^{'} s age is : 20

Jonathan^{'} s age is : 60

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