document.write( "Question 236010: how many gallons of 70% antifreeze solution must be mixed with 60 gallons of 10% antifreeze to get a mixture that is 60% antifreeze \n" ); document.write( "
Algebra.Com's Answer #173793 by checkley77(12844)\"\" \"About 
You can put this solution on YOUR website!
.70x+.10*60=.60(x+60)
\n" ); document.write( ".70x+6=.60x+36
\n" ); document.write( ".70x-.60x=36-6
\n" ); document.write( ".10x=30
\n" ); document.write( "x=30/.10
\n" ); document.write( "x=300 gal. of 70% anti freeze is used.
\n" ); document.write( "Proof;
\n" ); document.write( ".70*300+.10*60=.60*(300+60)
\n" ); document.write( "210+6=.60*360
\n" ); document.write( "216=216
\n" ); document.write( "
\n" ); document.write( "
\n" );