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Ben is three times as old as John. The sum of their ages is 40 years. How old is each of them?

Solution

Ben is three times as old as John. The sum of their ages is 40 years. How old is each of them?

Solution

John^{'} s age is : 10

Ben^{'} s age is : 30

Solution steps

Translate the problem into an equation:

3 x + x = 40

Solve for

x, 3 x + x = 40 : x = 10

Find age

John^{'} s age is : 10

Ben^{'} s age is : 30

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