SOLUTION: Jenny is three times as old as Sarah. In 12 years Jenny will be twice as old as Sarah is in 12 years. How old is each now?

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Question 604283: Jenny is three times as old as Sarah. In 12 years Jenny will be twice as old as Sarah is in 12 years. How old is each now?
Answer by flame8855(424) About Me  (Show Source):
You can put this solution on YOUR website!
j = 3s
j+12 = 2(s+12)
j+12 = 2s+24
3s+12 = 2s +24
s =12
j = 36