In its first month of operations, Cullumber Compary made three purchuses of merchandise in the following sequence (1) 240 units at \$4, (2) 340 unitstat 56 , and (39) 440 units at 57 . Assuming there are 140 units on hand at the end of the period, compute the cost of the endirs imventory under (a) the FIFO method and (b) the LFO method, Cullumber user a periodic inventory system