SOLUTION: How many bags with 4% cement should be mixed with 3 bags containing 24% cement, to produce a new concrete mix containing 9% cement?
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Question 848489: How many bags with 4% cement should be mixed with 3 bags containing 24% cement, to produce a new concrete mix containing 9% cement?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
.04x+.24*3=.09*(3+x)
x=9
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