The MobileShell Company operates a refinary to convert crude oil into three separate gasoline products, Jet Fuel, Super and Regular Gasoline. All three end products are separated simultaneously at a single splitoff point. Regular Gasoline is ready for sale immediately upon splitoff without further processing or any other additional costs. Jet Fuel and Super are processed further before being sold at a cost of $50,000 and $25,000, respectively. During 2020, the selling prices of the items and the total amounts sold were as follows: Jet Fuel -68 tons sold for $1,200 per ton Super-672 tons sold for $800 per ton Regular - 480 tons sold for $600 per ton The total joint manufacturing costs for the year were $580,000. There were no beginning inventories. At the end of the year, the following inventories of completed units were on hand: Jet Fuel, 132 tons; Super, 28 tons; Regular , 120 tons. There was no beginning or ending work in process. Required: Using the NRV Method, a) compute the cost of inventories of i. Jet Fuel ii. Super and iii. Regular Gasolines. b) compute the gross margin for each of the products