SOLUTION: stephen is three times as old as theresa. in four yrs, he wil be twice as old as she will be. how old is each now?

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Question 826037: stephen is three times as old as theresa. in four yrs, he wil be twice as old as she will be. how old is each now?
Answer by josgarithmetic(39620) About Me  (Show Source):
You can put this solution on YOUR website!
x stephen
y teresa

x+4=2(y+4) and x=2y;
x+4=2y+8
x-2y=8-4
x-y=4
'
Sustitute for x.
2y-y=4
highlight%28y=4%29.
..
.
!