Question 308529
cream has approximately 22% of butterfat.how many gallons of cream must be mixed with 2% milk to give 20 gallons of milk containing 4% of butterfat
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Equation:
fat + fat = fat
0.22x + 0.02(20-x) = 0.04*20
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Multiply thru by 100 to get:
22x + 2*20 - 2x = 4*20
20x = 2*20
x = 2 gallons (amt. of cream needed in the mixture)
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Cheers,
Stan H.