SOLUTION: Denise is six more than two times as old as Cheryl. In 21 years the sum of their two ages will be 99. How old is Cheryl now.

Question 613803: Denise is six more than two times as old as Cheryl. In 21 years the sum of their two ages will be 99. How old is Cheryl now.
Answer by josmiceli(19441) (Show Source): You can put this solution on YOUR website!
Let = Denise's age now
Let = Cheryl's age now
given:
(1)
(2)
-----------------------
(1)
and
(2)
(2)
Subtract (1) from (2)
(2)
(1)

and, since

Cheryl is 17 now
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