SOLUTION: This year i am twice as old as my daughter. Fourteen years ago I was four times as old as she was then. How old am I?

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Question 435199: This year i am twice as old as my daughter. Fourteen years ago I was four times as old as she was then. How old am I?
Answer by jorel1380(3719) About Me  (Show Source):
You can put this solution on YOUR website!
Let m equal me, d is my daughter:
m=2d
m-14=4(d-14)
2d-14=4d-56
42=2d
21=d
42=m.