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September 20, 2014

September 20, 2014

Posted by **SUBSTITUTION METHOD** on Monday, May 16, 2011 at 7:23am.

- math -
**drwls**, Monday, May 16, 2011 at 7:40amLet the amount earning 6% be X and the amount earning 8% be Y. You have to solve these two equations in two unknowns.

X + Y = 2000

0.06 X + 0.08 Y = 144

Substitute 2000 -X for Y in the second equation and solve the resulting equation for X.

0.06X + 0.08(2000 - X) = 144

160 -144 = 0.02 X

X = $800

Y = 2000 - X = $1200

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