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Popular Word Problems >

The sum of the ages of Bob and Cathy is 84 years. In 3 years, Bob will be twice as old as Cathy. How old is Cathy now?

Solution

T h e s u m o f t h e a g es o f B o b an d C a t h y i s 84 ye a rs . I n 3 ye a rs, B o b w i ll b e tw i ce a s o l d a s C a t h y . Ho w o l d i s C a t h y n o w ?

Solution

Cathy^{'} s age is : 27

Solution steps

Translate the problem into an equation:

x + 3 = 2 (84 - x + 3)

Solve for

x, x + 3 = 2 (84 - x + 3) : x = 57

Find Cathy's age

: 27

Cathy^{'} s age is : 27

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