document.write( "Question 335856: a 10% solution of fertilizer is to be mixed with a 50% solution of fertilizer in order to get 160 gallons of 40% solution. How many gallons of the 10% solution and the 50% solution should be mixed? \n" ); document.write( "
Algebra.Com's Answer #240880 by mananth(16946)\"\" \"About 
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let 10 % be x
\n" ); document.write( "50 % will be 160-x
\n" ); document.write( "Mixture 40% 160 liters
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\n" ); document.write( "Concentration equation
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\n" ); document.write( "0.1x+0.5(160-x)= 160*.4
\n" ); document.write( "0.1x +80-0.5x = 64
\n" ); document.write( "-0.4x = -80+64
\n" ); document.write( "-0.4x = -16
\n" ); document.write( "divide by -0.4
\n" ); document.write( "x= -16/-0.4
\n" ); document.write( "x=40 liters 10% solution
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