document.write( "Question 246603: a contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 6 bags of 16% cement to produce a mix containing 11% cement?\r
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document.write( " a. 16 bags b. 12 bags c. 10 bags d. 21 bags \n" );
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Algebra.Com's Answer #180038 by edjones(8007)![]() ![]() You can put this solution on YOUR website! Let x=bags of .08 cement needed to make .11 cement. \n" ); document.write( "6*.16=.96 \n" ); document.write( "x*.08=.08x \n" ); document.write( "---------------- \n" ); document.write( ".11(6+x)=.08x+.96 \n" ); document.write( ". \n" ); document.write( ".66+.11x=.08x+.96 \n" ); document.write( ".03x=.3 \n" ); document.write( "x=10 bags \n" ); document.write( ". \n" ); document.write( "Ed \n" ); document.write( " |