PART 4 (20 minutes) Kamil Company produces three types of stereo headphones, K-11, K-12, and K-13. The production of all three types requires the use of a special machine, which can only be operated 300 hours each month. The following data are provided by the controller Selling price per unit Variable cost per unit Machine time required in minutes K-11 $84 $49 6 minutes K-12 $112 $56 10 minutes K-13 $147 $70 15 minutes The demand for all three types has been very strong, and the firm can sell as many headphones as it can produce Required: 1. Given the capacity constraint imposed by the special machine, which type should be made? 2. How much would the selling price of the second most profitable product have to increase to be as profitable as the answer to A