The inventory of the Roseburg Sand and Gravel Company on June 30 shows 1,000 tons at $9 per ton. A physical inventory on July 31 shows a total of 1,200 tons on hand. Revenue from sales of gravel for July totals $102,000. The following purchases were made during July: 1. Compute the Cost of Goods Sold as of July 31 using (a) LIFO, (b) FIFO, and (c) Weighted average 2. Compute the gross profit using each method. The inventory of the Roseburg Sand and Gravel Company on June 30 shows 1,000 tons at $9 per ton. A physical inventory on July 31 shows a total of 1,200 tons on hand. Revenue from sales of gravel for July totals $102,000. The following purchases were made during July: 1. Compute the Cost of Goods Sold as of July 31 using (a) LIFO, (b) FIFO, and (c) Weighted average 2. Compute the gross profit using each method