Inventory beginning 500 units $5.00@, purchase (1) 500 unit $5.30@, purchase (2) 600 unit $3.60 @, sales made 700 units for $6300. A Physical stocktakng made 31 Dec 590 units were on hand. Using the specific identification 300 unit were sold from opening stock 400 unit were sold from first purchase. how could I calculate the gross profit. FIFO,LIFO and weighted Average how much is the sales revenue pls