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Popular Word Problems >

A father is currently 21 years older than his son. In 8 years he will be twice as old as his son. What are their present ages?

Solution

A f a t h er i s c u rre n tl y 21 ye a rs o l d er t han hi s so n . I n 8 ye a rs h e w i ll b e tw i ce a s o l d a s hi s so n . Wha t a re t h e i r p rese n t a g es ?

Solution

Father^{'} s age is : 34

Boy^{'} s age is : 13

Solution steps

Translate the problem into an equation:

x + 8 = 2 (x - 21 + 8)

Solve for

x, x + 8 = 2 (x - 21 + 8) : x = 34

Find age

Father^{'} s age is : 34

Boy^{'} s age is : 13

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