document.write( "Question 461704: A solution of 53% pesticide is to be mixed with a solution of 21% pesticide to form 128 liters of a 40% solution. How many liters of the 53% solution must be used? \n" ); document.write( "
Algebra.Com's Answer #318575 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
128x.4=51.2
\n" ); document.write( "p+q=128
\n" ); document.write( ".53p+.21q=51.2
\n" ); document.write( "53p+21q=5120
\n" ); document.write( "21p+21q=2688
\n" ); document.write( "32p=2432
\n" ); document.write( "p=76
\n" ); document.write( "q=52
\n" ); document.write( "You need 76 liters of 53% solution and 52 liters of 21% solution..
\n" ); document.write( "
\n" );