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document.write( "how many bags of 7% cement should be mixed with 4 bags of 17% to produce a mix containg 11% cement \n" );
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Algebra.Com's Answer #424048 by checkley79(3341)![]() ![]() ![]() You can put this solution on YOUR website! .07X+.17*4=.11(4+X) \n" ); document.write( ".07X+.68=.44+.11X \n" ); document.write( ".07X-.11X=.44-.68 \n" ); document.write( "-.04X=-23 \n" ); document.write( "X=-.24/-.04 \n" ); document.write( "X=6 BAGS OF 7% IS USED. \n" ); document.write( "PROOF: \n" ); document.write( ".07*6+.17*4=.11(4+6) \n" ); document.write( ".42+.68=.11*10 \n" ); document.write( "1.1=1.1\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( " |