document.write( "Question 324939: 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" ); document.write( "
Algebra.Com's Answer #232700 by Fombitz(32388)![]() ![]() You can put this solution on YOUR website! Let the number of 7% bags be Y. \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( " \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( ". \n" ); document.write( "7 bags of 7% cement need to be added. \n" ); document.write( " |