Question 967098: William is 2 times as old as Stephanie. 28 years ago, William was 9 times as old as Stephanie.
Answer by ankor@dixie-net.com(22740)   (Show Source):
You can put this solution on YOUR website! William is 2 times as old as Stephanie.
w = 2s
28 years ago, William was 9 times as old as Stephanie.
w - 28 = 9(s - 28)
w - 28 = 9s - 252
w = 9s - 252 + 28
w = 9s - 224
Replace w with 2s (from the first statement)
2s = 9s - 224
224 = 9s - 2s
224 = 7s
s = 224/7
s = 32 yrs is Stephanie's age
then
2(32) = 64 yrs is Will's age
:
:
See if this works in the statement:
" 28 years ago, William was 9 times as old as Stephanie."
64 - 28 = 9(32 - 28)
36 = 9(4)
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