SOLUTION: a dairy needs 288 gallons of milk containing 7% butterfat. how many gallons each of milk containing 8% butterfat and milk containing 2% butterfat must be used to obtain the desired

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Question 848028: a dairy needs 288 gallons of milk containing 7% butterfat. how many gallons each of milk containing 8% butterfat and milk containing 2% butterfat must be used to obtain the desired 288 gallons?
Answer by josgarithmetic(39618) About Me  (Show Source):
You can put this solution on YOUR website!
You want this lesson which thoroughly explains what and how to understand and solve the question:

http://www.algebra.com/tutors/Mixtures%3A-All-in-Symbols.lesson?content_action=show_dev