The following informationregarding inventory transactions is available for the month of May.

Date      TypeofEvent             Number of Units    Unit Cost      Total Cost

May1    BeginningInventory      100                        $12            $1,200       

3           Purchase                      50                          14              700    

12         Sale                              70     

15         Sale                              60 

20         Purchase                      100                         15             1,500      

28         Sale                               60

Determine the correct balances at May 31 for Merchandise Inventory and Cost of GoodsSold under each of the following inventory methods:

(a) periodic FIFO

(b) periodic LIFO (c)weighted-average.