Assuming that the perpetual inventory method is used and costs are computed at the time of each withdrawal, what is the gross profit if the inventory is valued at FIFO? June 1 Balance 297 units @ $17 June 10 Sold 203 units @ $42 11 Purchased 795 units @ $21 15 Sold 498 units @ $44 20 Purchased 500 units @ $23 27 Sold 303 units @ $47