SOLUTION: a) John is now 3 times as old as his brother Sam. In 5 years, John will be twice as old as Sam will be then. Find their present ages.

Algebra ->  Algebra  -> Coordinate Systems and Linear Equations  -> Linear Equations and Systems Word Problems -> SOLUTION: a) John is now 3 times as old as his brother Sam. In 5 years, John will be twice as old as Sam will be then. Find their present ages.      Log On

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Question 445894: a) John is now 3 times as old as his brother Sam. In 5 years, John will be twice as old as Sam will be then. Find their present ages.
Answer by mananth(12270) About Me  (Show Source):
You can put this solution on YOUR website!
Sam's age x
John's age 3x
5 years later
Sam's age x+5
John's age 3x+5
John's age 2 times older
3x+5=2(x+5)
3x+5=2x+10
x=10-5
x=5
x= 5 Sam's age
3x=15 John's age