SOLUTION: Ray is 18 years older lan his sister Gloria. In 15 years, he will be twice as old as Gloria. How old is each of them now?

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Question 1114875: Ray is 18 years older lan his sister Gloria. In 15 years, he will be twice as old as Gloria. How old is each of them now?
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28r-g=18%2Cr%2B15=2%28g%2B15%29%29

r%2B15=2g%2B30
r-2g=15


system%28r-g=18%2Cr-2g=15%29

Subtract second equation from first equation of the system.
g=3
-
r=21

Ray is 21 and Gloria is 3.