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Two years ago John was three times as old as Frank. Five years from now John will be twice as old as Frank. what is the sum of their ages right now?

Solution

Two years ago John was three times as old as Frank. Five years from now John will be twice as old as Frank. what is the sum of their ages right now?

Solution

the sum of their ages : 32

Solution steps

Translate the problem into an equation:

x - 2 = 3 (y - 2), x + 5 = 2 (y + 5)

x - 2 = 3 (y - 2), x + 5 = 2 (y + 5) : x = 23, y = 9

Find the sum of their ages :

32

the sum of their ages : 32

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