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John is three times as old as his son Jack. The sum of their ages is 48. Calculate how old John is.

Solution

John is three times as old as his son Jack. The sum of their ages is 48. Calculate how old John is.

Solution

John^{'} s age is : 36

Solution steps

Translate the problem into an equation:

3 x + x = 48

Solve for

x, 3 x + x = 48 : x = 12

Find John's age

: 36

John^{'} s age is : 36

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