SOLUTION: Three years ago, Rica was thrice as old as Dandy. Three years hence, she will be twice as old. Find their present ages.

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Question 1200533: Three years ago, Rica was thrice as old as Dandy. Three years hence, she will be twice as old. Find their present ages.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
system%28r-3=3%28d-3%29%2Cr%2B3=2%28d%2B3%29%29

.
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d=9-----------------------Dandy
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r=2d%2B3=18%2B3=21
r=21-------------------Rica