SOLUTION: write 2 equations and solve:
A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 7 bags of 16% cement to produce a m
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Question 999820: write 2 equations and solve:
A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 8% cement should he mix with 7 bags of 16% cement to produce a mix containing 12% cement?
Answer by josgarithmetic(39618) (Show Source): You can put this solution on YOUR website!
Learn this lesson because your example problem works this way.
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