document.write( "Question 758500: If you have 8 cups of milk at 1% butter fat and want to add milk that is 4% butter fat so the whole mixture is 2% butter fat how many cups would you need to add? \n" ); document.write( "

Algebra.Com's Answer #461513 by josmiceli(19441) $\"\"$ $\"About$

You can put this solution on YOUR website!
Let $\"+x+\"$ = cups of 4% milk to be added
\n" ); document.write( " $\"+.01%2A8+=+.08+\"$ cups of butterfat in 1% milk
\n" ); document.write( " $\"+.04x+\"$ = cups of butterfat in 4% milk to be added
\n" ); document.write( "---------------------------------------------
\n" ); document.write( " $\"+%28+.08+%2B+.04x+%29+%2F+%28+8+%2B+x+%29+=+.02+\"$
\n" ); document.write( " $\"+.08+%2B+.04x+=+.02%2A%28+8+%2B+x+%29+\"$
\n" ); document.write( " $\"+.08+%2B+.04x+=+.16+%2B+.02x++\"$
\n" ); document.write( " $\"+.02x+=+.08+\"$
\n" ); document.write( " $\"+x+=+4+\"$
\n" ); document.write( "4 cups of 4% milk need to be added
\n" ); document.write( "check:
\n" ); document.write( " $\"+%28+.08+%2B+.04x+%29+%2F+%28+8+%2B+x+%29+=+.02+\"$
\n" ); document.write( " $\"+%28+.08+%2B+.04%2A4+%29+%2F+%28+8+%2B+4+%29+=+.02+\"$
\n" ); document.write( " $\"+.24+%2F+12+=+.02+\"$
\n" ); document.write( " $\"+.24+=+.24+\"$
\n" ); document.write( "OK \n" ); document.write( "

\n" );