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September 1, 2015

Homework Help: Equations Question

Posted by Michelle on Monday, February 5, 2007 at 1:23am.

A mother is twice as old as her daughter now, but ten years ago, she was 3 times as old as her daughter. Fins their ages at present.

I tried to form an equation: 2x-10=3x, but that didn't work. Could someone help me forma working equation for it, and I can take it from there.

Thank you!
Michelle

M=2D
M-10=3(D-10)

the second one becomes
M=3(D-10)+10
set this equation equal to the first, and solve for D.

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