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April 20, 2014

Homework Help: algebra

Posted by Anonymous on Sunday, September 13, 2009 at 7:31pm.

elmer burns works for a ready-mix concrete cmpany. elmer receives an order for 3.5 cubic yards of concrete. this mixture of concrete contains sand, cement, gravel, and water, for each pound of water, there are 5 lb of sand, 2 lb of cement, and 6 lb of gravel. find (a) the total weight of the order(in pounds), assuming a cubic yard of concrete weighs 4,000 lb, and (b) how many pounds of each ingredient are needed.

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