SOLUTION: debbie is now twice as old as jerry. Four years ago, Debbie was three times as old as jerry then. How old is Debbie?

Question 782132: debbie is now twice as old as jerry. Four years ago, Debbie was three times as old as jerry then. How old is Debbie?
Answer by mananth(16946) (Show Source): You can put this solution on YOUR website!
debbie is now twice as old as jerry. Four years ago, Debbie was three times as old as jerry then. How old is Debbie?
jerry = x years
Debbie = 2x years
4 years ag
jerry's age = x-4
Debbie's age 2x-4
2x-4=3(x-4)
2x-4=3x-12
3x-2x=12-4
x=8
jerry's age = 8 years
Debbie's age = 8*2=16 years
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