Given the following information, how many machines should be assigned to an operator lowest cost operations when: Loading and unloading time on one machine is 1.41 minutes. Walking time to the next facility is 0.08 minutes. Machine time is 4.34 minutes. Opertor cost is $ 13.20 per hour Machine cost is S18.00 per hour Given the following information, how many machines should be assigned to an operator lowest cost operations when: Loading and unloading time on one machine is 1.41 minutes. Walking time to the next facility is 0.08 minutes. Machine time is 4.34 minutes. Opertor cost is $ 13.20 per hour Machine cost is S18.00 per hour