document.write( "Question 278856: Please help.\r
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document.write( "A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 7% cement should he mix with 10 bags of 15.5% cement to produce a mix containing 12% cement? \n" );
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Algebra.Com's Answer #202826 by richwmiller(17219)![]() ![]() You can put this solution on YOUR website! .07*x+10*.155=(10+x)*.12\r \n" ); document.write( "\n" ); document.write( "x=7 bags to add for a total mix of 17 bags \n" ); document.write( " |