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A large tank initially contains 365,200kg of a petroleum product. Two pumps (A & B) feed...

A large tank initially contains 365,200kg of a petroleum product. Two pumps (A & B) feed product into the tank at constant rates of 35,361kg/h and 43,663kg/h, respectively. The product is pumped from the tank into railroad tank cars which hold 75,000kg of product each. After two days, the tank contains 463,542kg of product.

a) How much product has been put into tank cars?

b) How many tank cars have been filled and shipped out?

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