Homework Help: Math

Posted by Caitlyne on Tuesday, February 21, 2012 at 7:27pm.

Carpet plus installs carpet for $100 plus $8 per square yard of carpet. Carpet World charges $75 for installation and $10 per square yard of carpet. Find the number of square yards of carpet for which the cost including carpet and installation is the same.
Please help me solve this and show your work pleas and thank you.

Math - brenda, Tuesday, February 21, 2012 at 7:52pm
100+8x = 75+10x
100-75 = 10x-8x
25 = 2x
/2 /2
12.5 = x

If you order 12.5 squares, the cost will be the same!!!

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