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George is twice as old as Jack. Jack is twice as old as Alex. The sum of their ages is 147

Solution

George is twice as old as Jack. Jack is twice as old as Alex. The sum of their ages is 147

Solution

Jack^{'} s age is : 42

George^{'} s age is : 84

Alex^{'} s age is : 21

Solution steps

Translate the problem into an equation:

2 x + x + \frac{x}{2} = 147

Solve for

x, 2 x + x + \frac{x}{2} = 147 : x = 42

Find age

Jack^{'} s age is : 42

George^{'} s age is : 84

Alex^{'} s age is : 21

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