document.write( "Question 67819: A liter of cream has 9.2% butterfat. How much skim milk containing 2% butterfat should be added to the cream to obtain a maxture of 6.4% butterfat? \n" ); document.write( "
Algebra.Com's Answer #48219 by checkley71(8403)\"\" \"About 
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1*.092+.02X=.064(1+X)
\n" ); document.write( ".092+.02X=.064+.064X
\n" ); document.write( ".02X-.064X=.064-.092
\n" ); document.write( "-.044X=-.028
\n" ); document.write( "X=-.028/-.044
\n" ); document.write( "X=.6363 LITERS OF 2% IS NEEDED
\n" ); document.write( "PROOF
\n" ); document.write( ".092+.02*.6363=.064(1.6363)
\n" ); document.write( ".092+.012726=.10472
\n" ); document.write( ".10472=.10472
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