document.write( "Question 999820: write 2 equations and solve:\r
\n" ); document.write( "\n" ); document.write( "A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 7 bags of 16% cement to produce a mix containing 12% cement?
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Algebra.Com's Answer #617366 by josgarithmetic(39618)\"\" \"About 
You can put this solution on YOUR website!
Learn this lesson because your example problem works this way. \n" ); document.write( "
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