SOLUTION: Four times Marie's age minus twice Lisa's age is -10. Lisa is three times as old as Marie. How old is Marie?

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Question 1073921: Four times Marie's age minus twice Lisa's age is -10. Lisa is three times as old as Marie. How old is Marie?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
Let Marie be m. Then Lisa would be 3m. So:
4m-2(3m)=-10
-2m=-10
m=5
Marie is 5; Lisa is 15. ☺☺☺☺