The following table is of profit, revenue, and number of employees of 10 companies. Profit US $ billion Revenue/employee No. of Employees Exxon Royal Dutch British Petroleum Petrofina SA Texao In Elf Aquitaine ENI Chevron Corp. PDVSA SK 11.6 7.7 4.2 2.8 2.9 0.94 3.8 3.6 4.7 0.125 US$ 96,180 74,286 70,859 67,394 92,103 11,461 37,417 84,619 84,818 4,088 a) For the 10 companies, the mean profit per company is $ billion US. (Round answer to one decimal place.) 122800 105100 56450 69064 29319 83710 80179 39367 56593 30595 b) The "overall" mean revenue per employee (i.e., for all employees of these firms combined) of the 10 companies is $ (Round answer to nearest whole number.) c) The "overall" mean profit per employee is $ US/employee. (Round answer to nearest whole number.) US.