SOLUTION: A daughters present age is half the present age of her father. 10 years ago the father was thrice as old as his daughter. What are their present ages?

Question 952778: A daughters present age is half the present age of her father. 10 years ago the father was thrice as old as his daughter. What are their present ages?
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
A daughters present age is half the present age of her father. 10 years ago the father was thrice as old as his daughter. What are their present ages?
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F = 2D
F - 10 = 3(D - 10)
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Sub for F
2D - 10 = 3D - 30
D = 20

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