document.write( "Question 1104838: if holstein cows produce milk that is on average 3.66% butterfat and jersey cows produce milk that is on average 4.5% butterfat, how many gallons of jersey milk should be added to every 100 gallons of Holstein milk to have milk that is 4% butterfat \n" ); document.write( "

Algebra.Com's Answer #719533 by ankor@dixie-net.com(22740) $\"\"$ $\"About$

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if holstein cows produce milk that is on average 3.66% butterfat and jersey cows produce milk that is on average 4.5% butterfat, how many gallons of jersey milk should be added to every 100 gallons of Holstein milk to have milk that is 4% butterfat?
\n" ); document.write( ":
\n" ); document.write( "Let j = amt of Jersey milk required
\n" ); document.write( ".0366(100) + .045j = .04(j+100)
\n" ); document.write( "3.66 + .045j = .04j + 4
\n" ); document.write( ".045j - .04j = 4 - 3.66
\n" ); document.write( ".005j = .34
\n" ); document.write( "j = .34/.005
\n" ); document.write( "j = 68 gal of Jersey milk to be added to the 100 of Holstein milk
\n" ); document.write( ":
\n" ); document.write( ":
\n" ); document.write( "check this in the original equation
\n" ); document.write( "3.66 + .045(68) = .04(168)
\n" ); document.write( "3.66 + 3.06 = 6.72 \n" ); document.write( "

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