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 300755: 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 JBarnum(2146) About Me  (Show Source):
You can put this solution on YOUR website!
C=2J
%28C-7%29%2B%28J-7%29=16
%28%282J%29-7%29%2B%28J-7%29=16
3J-14=16
3J=30
J=10
C=2J
C=2%2810%29
C=20
checking
%28C-7%29%2B%28J-7%29=16
%2820-7%29%2B%2810-7%29=16
%2813%29%2B%283%29=16
16=16
correct