document.write( "Question 70275:  (3)A 100% concetrate is to be mixed with a mixture having a concentrate of 40% to obtain 55 gallons of a mixture with a concentrate of 75%. how much of the 100% concentrate will be needed?\r
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Algebra.Com's Answer #50131 by checkley75(3666)    ![]() You can put this solution on YOUR website! 1X+.4(55-X)=.75*55 \n" ); document.write( "X+22-.4X=41.25 \n" ); document.write( ".6X=41.25-22 \n" ); document.write( ".6X=19.25 \n" ); document.write( "X=19.25/.6 \n" ); document.write( "X=32.0833 GALLONS OF 100% SOLUTION IS NEEDED. \n" ); document.write( "PROOF \n" ); document.write( "32.0833+.4(55-32.08333)=41.25 \n" ); document.write( "32.08333+22-12.8333=41.25 \n" ); document.write( "54.08333-12.8333=41.25 \n" ); document.write( "41.25=41.25\r \n" ); document.write( " \n" ); document.write( "\n" ); document.write( " \n" ); document.write( "  |