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Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.

Solution

Nine years ago, Jareth was five times as old as Dave. Now, he is only three times as old as Dave. Find their present ages.

Solution

Dave^{'} s age is : 18

Jareth^{'} s age is : 54

Solution steps

Translate the problem into an equation:

3 x - 9 = 5 (x - 9)

Solve for

x, 3 x - 9 = 5 (x - 9) : x = 18

Find age

Dave^{'} s age is : 18

Jareth^{'} s age is : 54

Popular Examples

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