SOLUTION: The sum of the ages of David and Ann is twenty-five. Five years ago David was four times as old as Ann. How old are they now?

Algebra ->  Human-and-algebraic-language -> SOLUTION: The sum of the ages of David and Ann is twenty-five. Five years ago David was four times as old as Ann. How old are they now?      Log On


   

Question 1164673: The sum of the ages of David and Ann is twenty-five. Five years ago David was four times as old as Ann. How old are they now?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
system%28y%2Bx=25%2Cy-5=4%28x-5%29%29
--
-
y-5=4%28x-5%29
y-5=4x-20
4x-20%2B5=y
4x-15=y
4x-15=25-x
5x=25%2B15
highlight%28x=8%29------------Ann