SOLUTION: How do I solve: A 50 gallon barrel of milk is 6% butterfat. How much skim milk (no butterfat) should be mixed to make milk that is 3% butterfat?

SOLUTION: How do I solve: A 50 gallon barrel of milk is 6% butterfat. How much skim milk (no butterfat) should be mixed to make milk that is 3% butterfat?

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Question 141564: How do I solve:
A 50 gallon barrel of milk is 6% butterfat. How much skim milk (no butterfat) should be mixed to make milk that is 3% butterfat?
Answer by scott8148(6628) (Show Source): You can put this solution on YOUR website!
let x="added milk" __ 50(6%)+x(0%)=(50+x)(3%) __ multiplying by 100 to clear percents

300+0=150+3x __ 150=3x __ 50=x
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