PLEASE HELP

Sandhill Co. began operations on July 1. It uses a perpetual inventory system During July the company had the following purchases and sales. Calculate the average cost per unit at July 1,6,11,14,21&27. (Round intermediate calculations to 0 decimal places and finat answers to 3 decimal places, e.g. \$105.501.) Determine the ending inventory under a perpetual inventory system using (1) FiFO, (2) moving-average cost, and (3) LFO. (Round average-cost per unit to 3 decimal places, e.3. 12.520 and final answer to 0 decimal places, e... 1,250.)