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Popular Word Problems >

15 years from now John will be twice as old as Peter.The current sum of the ages of John and Peter is 21.How old is Peter right now?

Solution

15 ye a rs f ro m n o w J o hn w i ll b e tw i ce a s o l d a s P e t er . T h e c u rre n t s u m o f t h e a g es o f J o hn an d P e t er i s 21. Ho w o l d i s P e t er r i g h t n o w ?

Solution

Peter^{'} s age is : 2

Solution steps

Translate the problem into an equation:

x + 15 = 2 (21 - x + 15)

Solve for

x, x + 15 = 2 (21 - x + 15) : x = 19

Find Peter's age

: 2

Peter^{'} s age is : 2

Popular Examples

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