SOLUTION: how much 2% milk and 9% whipping cream need to be mixed to make 35 gallons of 4% milk?

Question 524168: how much 2% milk and 9% whipping cream need to be mixed to make 35 gallons of 4% milk?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
how much 2% milk and 9% whipping cream need
to be mixed to make 35 gallons of 4% milk?
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Equation:
fat + fat = fat
0.02x + 0.09*(35-x) = 0.04(35)
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Multiply thru by 100 to get:
2x + 9*35 - 9x = 4*35
-7x = -5*35
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x = 25 gallons (amt. of 2% milk needed)
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35-x = 10 gallons (amt. of 9% milk needed)
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cheers,
Stan H.
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