Trey Monson starts a merchandising business on December 1 and enters into the following three inventory purchases. Monson uses a perpetual inventory system. Also, on December 15 . Monson sells 15 units for $32 each. PurchasesonDecember7PurchasesonDecenber14PurchasesonDeceaber2110units$18.00cost20units$24.00cost15units$26.00cost Determine the costs assigned to ending inventory when costs are assigned based on the LIFO method vetermine the costs assignea to enaing inventory when costs are assigneo dasea on the LirU metnoa