What is The inventory, turnover ratio and days to sell inventory ratio?$($a$)$

Calculate Larkspur Hands' cost of goods sold, gross margin, and ending inventory for the month of May using FIFO.

Cost of goods sold $

Gross margin $

Ending inventory $

Hi Could you please help me calcualate the cost of good sold, gross margin, and ending inventory for the month of may using weighted average?

Thanks: