The Rock Shopuses aperconventorysystem. The followdatarelles bis inventory verlory, January 300 units 35.00 Purchase: January 900 units $5:40 Purchase January 19 210 $600 Aphysical count on March 31 shows inventory on hand of 300 units Instructions (show your work Determine the value that should be assigned to the ending inventory ng UFO (11 pore) De the should be gred togethe PFO ( ty