document.write( "Question 422585: How much 58% antifreeze solution and 45% antifreeze solution should be combined to give 39 gallons of 54% antifreeze solution? \n" ); document.write( "
Algebra.Com's Answer #319575 by jorel1380(3719)\"\" \"About 
You can put this solution on YOUR website!
39x.54=21.06
\n" ); document.write( "p+q=39
\n" ); document.write( ".58p+.45q=21.06
\n" ); document.write( "58p+45q=2106
\n" ); document.write( "45p+45q=1755
\n" ); document.write( "13p=351
\n" ); document.write( "p=27
\n" ); document.write( "q=12
\n" ); document.write( "You need 27 gallons of 58% solution and 12 gallons of 45% solution..
\n" ); document.write( "
\n" );