The inventory records for Radford Co. reflected the following
| Beginning Inventory @ May 1 | 2,000 units @ $5.60 | 
| First Purchase @ May 7 | 2,100 units @ $5.80 | 
| Second Purchase @ May 17 | 2,300 units @ $5.90 | 
| Third Purchase @ May 23 | 1,900 units @ $6.00 | 
| Sales @ May 31 | 6,300 units @ $7.50 | 
 9.     Required information- Determine the weighted average cost per unit (rounded) for May.
$5.83 $5.77 $5.90 $7.50
10. Required information- Determine the amount of cost of goods sold assuming the LIFO cost flow method.
$37,800 $37,150 $36,540 $35,280
11. Required information- Determine the amount of ending inventory assuming the FIFO cost flow method.
$12,000 $11,990$11,200 $7,100