The following table shows the annual profit for five companies, the cost to purchase that company and the number of employees currently employed. Company Annual Profit Cost to Buy Company No of Employees A R40 000 R36 000 5 B R52 000 R50 000 7 C R42 000 R40 000 8 D R120 000 R130 000 18 E R81 000 R85 000 13 If the profit per employee remained the same, how many extra employees would Company C have to employ to achieve an annual profit that is 250% more than the current one? 4