$21.08 a barrel

[mawshj]

the station owner fills his tanks with high price gas, the next day gas drops in price, the station owner need to keep his price up till he sells the full tank off,then he can drop the price..... when the price goes up the station owner knows that when he refills his tank he will have to pay the big new price so he must put the price up as fast as possible or he will need to borrow money from the bank to pay for the fill up of his tanks