SOLUTION: A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 10% cement should he mix with 8 bags of 12.5% cement to produce a mix containing 11% cement.
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Question 324285: A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 10% cement should he mix with 8 bags of 12.5% cement to produce a mix containing 11% cement. Found 2 solutions by nyc_function, modi.kk91:Answer by nyc_function(2741) (Show Source):
You can put this solution on YOUR website! Let b = bags of cement
0.10b + 8(0.125) = 0.11(b + 8)
Can you take it from here?
I gave you the equation that you'll need to find the answer.
