SOLUTION: Jack is five years older than Sarah. In three years, Jack will be twice as old as Sarah. How old are they now?
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Question 758571: Jack is five years older than Sarah. In three years, Jack will be twice as old as Sarah. How old are they now?
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Jack's age now
Let = Sarah's age now
-----------
given:
(1)
(2)
----------------------
By substitution:
(2)
(2)
(2)
(2)
and
(1)
(1)
(1)
jack is 7 and Sarah is 2
--------------------
check:
(2)
(2)
(2)
(2)
OK
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