The following table is of profit, revenue, and number of employees of 10 companies Profit US $ billion Revenue/employee No. of Employees US$ 96.190 122900 Exxon 11.8 Royal Dutch 7.8 74.285 105000 4.2 70.859 56450 British Petroleum Petrofina SA 2.2 67,393 69063 Texao In 3.1 92, 106 29311 Elf Aquitaine 0.95 11,461 83710 ENI 3.5 37,416 80176 Chevron Corp. 3.6 84.622 39369 PDVSA 4.6 84.819 56598 SK 0.12 4,088 30591 a) For the 10 companies, the mean profit per company is $ billion US (Round answer to one decimal place.) b) The "overall" mean revenue per employee (i.e., for all employees of these firms combined) of the 10 companies is $ US (Round answer to nearest whole number.) c) The "overall" mean profit per employee is $ US/employee (Round answer to nearest whole number.)