SOLUTION: Carla is now twice as old as Jennifer. Seven years ago, the sum of their ages was 16. How old is each girl now?

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Question 300706: Carla is now twice as old as Jennifer. Seven years ago, the sum of their ages was 16. How old is each girl now?
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
let jennifer's age be x
carla's age = 2x
7 years ago
jennifer was x-7 years
Carla was 2x-7 years
x-7 + 2x-7 =16
3x-14=16
3x=16+14
3x=30
x=10 which is jennifer's age now
Carla's age will be 2* 10 = 20 years