Salmone Company reported the following purchases and sales for its only product. Salmone uses a perpetual inventory system. Determine the cost assigned to cost of goods sold using LIFO. \begin{tabular}{rlcc} Date & \multicolumn{1}{c}{ Activities } & Units Acquired at Cost & Units Sold at Retail \\ May 1 & Beginning Inventory & 350 units @ $20 & \\ 5 & Purchase & 320 units @ $22 & \\ 10 & Sales & & 240 units @ $30 \\ 15 & Purchase & 200 units @ $23 & \\ 24 & Sales & & 190 units @ $31 \\ \hline \end{tabular}