Item Beta Units Cost April 2 Purchase 1 $276 April 15 Purchase 1 277 April 20 Purchase 1 278 Total 3 $831 Average cost per unit $277 ($831 3 units) Assume that one unit is sold on April 27 for $343. Determine the gross profit for April and ending inventory on April 30 using the (a) first-in, first-out (FIFO); (b) last-in, first-out (LIFO); and (c) weighted average