document.write( "Question 220752: How do you solve this. How much whipping cream and 2%milk should be mixed to obtain 35gallons of milk with 4% butterfat? 2%milk has 2% butterfat Whipping cream has 9% butterfat \n" ); document.write( "
Algebra.Com's Answer #165659 by RAY100(1637)\"\" \"About 
You can put this solution on YOUR website!
Let m = amt milk,,,,and c = amt of cream,,,,both in gallons
\n" ); document.write( ".
\n" ); document.write( ".02m +.09c = .04 (35)
\n" ); document.write( ".
\n" ); document.write( " but m+c =35,,,,,or m=35-c,,,,subst
\n" ); document.write( ".
\n" ); document.write( ".02(35-c) + .09 c = .04(35)
\n" ); document.write( ".
\n" ); document.write( ".7 -.02c + .09c = 1.4
\n" ); document.write( ".
\n" ); document.write( ".07c = .7
\n" ); document.write( ".
\n" ); document.write( "c= 10 gal,,,,,,,,,m=35-10=25 gal
\n" ); document.write( ".
\n" ); document.write( ".
\n" ); document.write( "checking,,,,,.02(25) + .09(10) = .04(35)
\n" ); document.write( ".
\n" ); document.write( ".5 + .9 = 1.4,,,,,ok
\n" ); document.write( ".\r
\n" ); document.write( "\n" ); document.write( "
\n" ); document.write( "
\n" );