Question 698560: katie is 3 times as old as her son, after fifteen years she will be twice as old as her son. what will be katie age? Answer by josmiceli(19441) (Show Source):
You can put this solution on YOUR website! Let = Katies's age now
Let = Son's age now = Katie's age in 15 yrs = Son's age in 15 yrs
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given:
(1)
(2)
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Substitute (1) into (2)
(2)
(2)
(2)
(2)
and
(1)
(1)
(1)
Katie is 45, and in 15 yrs, she will be 60
check:
(2)
(2)
(2)
(2)
OK
