30 pts. Two closed tanks 500 feet apart contain an oil (SG = 0.85, u = 100 cP) and are connected by a 3-in schedule 40 wrought iron pipe. The level in tank A is 20 feet above the level in tank B, and the gas pressure in the tank Bis 10 psi higher than in tank A. 20 pts. a. What is the flow rate of oil flowing through the pipe in ft/min? b. Which way is the oil flowing? 10 pts