Question 1029440: 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.
:) Found 2 solutions by Alan3354, josmiceli:Answer by Alan3354(69443) (Show Source):
You can put this solution on YOUR website! 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.
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In 5 years, the ratio changes from 3x to 2x.
3x - 2x = 5 years
--> 15 & 5
You can put this solution on YOUR website! Let = John's age now
Let = Sam's age now
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(1)
(2)
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(2)
Substitute (1) into (2)
(2)
(2)
and
(1)
(1)
(1)
John is 15 and Sam is 5
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check:
(2)
(2)
(2)
(2)
OK
