The inventory records for Radford Company reflected the following What is the weighted average cost per unit for May

The inventory records for Radford Company reflected the following $6.00 $6.20 $6.30 $6.40 $7.90 Beginning inventory on May 1 First purchase on May 7 second purchase on May 17 Third purchase on May 23 Sales on May 31 2,200 2,300 2,500 2,100 6,900 units units units units units What is the weighted average cost per unit for May?