document.write( "Question 305750: Cream is approximately 22% butterfat. How many gallons of cream must be mixed with milk testing at 2% butterfat to get 90 gallons of milk containing 4% butterfat?
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document.write( "possible answers:
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document.write( "7 gallons
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document.write( "8 gallons
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document.write( "9 gallons
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document.write( "11 gallons
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document.write( "12 gallons \n" );
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