SOLUTION: Cynthia is 5 years older than Sylvia. The sum of their ages is 13. How old is each girl?

Question 1144724: Cynthia is 5 years older than Sylvia. The sum of their ages is 13. How old is each girl?
Answer by ikleyn(52803) (Show Source): You can put this solution on YOUR website!
.


Cynthia       + Sylvia = 13


(Cynthia + 5) + Sylvia = 13


2*Sylvia + 5           = 13


2*Sylvia               = 13 - 5


2*Sylvia               = 8


  Sylvia               = 8/2 = 4.


Then Cynthia = 4 + 5 = 9.


Answer.  Cynthia is 9 years young.   Sylvia is 4 years young.

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