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The units of an item available for sale during the year were as follows: 27 units @ $90 54 units @ $98 January 10 February 27 July 11 November 13 Inventory Purchase Purchase Purchase 63 units @ $106 36 units @ $115 There are 50 units of the item in the physical inventory at December 31. The periodic inventory system is used. a. Determine the ending inventory cost by the first-in, first-out method. $ b. Determine the ending inventory cost by the last-in, first-out method. $ c. Determine the ending inventory cost by the average cost method. $ An employee earns $40 per hour and 1.5 times that rate for all hours in excess of 40 hours per week. Assume that the employee worked 60 hours during the week, and that the gross pay prior to the current week totaled $58,000. Assume further that the social security tax rate was 6,0%, the Medicare tax rate was 1.5%, and the federal income tax to be withheld was $614. Required: 1. Determine the gross pay for the week. S 2. Determine the net pay for the week