SOLUTION: Two gallons of milk contain 2% butterfat. How many quarts of milk should be drained and replaced by pure butterfat to prodice a solution of two gallons of milk containing 5% butter

SOLUTION: Two gallons of milk contain 2% butterfat. How many quarts of milk should be drained and replaced by pure butterfat to prodice a solution of two gallons of milk containing 5% butter

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Question 407500: Two gallons of milk contain 2% butterfat. How many quarts of milk should be drained and replaced by pure butterfat to prodice a solution of two gallons of milk containing 5% butterfat?
Answer by graphmatics(170) (Show Source): You can put this solution on YOUR website!
Let x be the number of quarts of butterfat then
.05*(16x) = 2 - 8x*.02
.2x = 2 - .16x
.2x + 16x = 2
.18x = 2
x = 2/.16
x = 12.5

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