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August 30, 2014

Homework Help: Math

Posted by mjLa on Saturday, June 25, 2011 at 3:39am.

A mother is 4 times as old as her daughter. In 4 years, the mother will be 3 times as old as her daughter. How many years old is the daughter now?

I came up with two equations:
M = 4D and M + 4 = 3(4 + D)

and I got D to be 12 but that isn't the correct answer??

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