In the gas pipeline of Cactus, Tab. to Reynosa, Tamps. The cost W(Ton/hr) is determined periodically during the day, the results are presented in the following table. t(hrs) O 4 W(Ton/hr) 1.3 Calculate the amount of gas that is pumped in 20 hours using Simpson's generalized rule. 8 1.1 1.2 12 1.4 16 1.25 20 1.2

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