document.write( "Question 1149954: A dairy needs 330 gallons of milk containing 7% butterfat. How many gallons each of milk containing 9% butterfat and milk containing 3% butterfat must be used to obtain the desired 330 gallons? \n" ); document.write( "
Algebra.Com's Answer #771281 by Alan3354(69443)\"\" \"About 
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A dairy needs 330 gallons of milk containing 7% butterfat. How many gallons each of milk containing 9% butterfat and milk containing 3% butterfat must be used to obtain the desired 330 gallons?
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\n" ); document.write( "n + t = 330 --- total solution
\n" ); document.write( "9n + 3t = 330*7 --- total butterfat
\n" ); document.write( "etc
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