answer all parts please

Imagine you have some workers and some handheld computers that you can use to take inventory at a warehouse. There are diminishing returns to taking inventory. If one worker uses one computer, he can inventory 100 items per hour. Two workers sharing a computer can together inventory 150 items per hour. Three workers sharing a computer can together inventory 160 items per hour. And four or more workers sharing a computer can together inventory fewer than 160 items per hour. Computers cost $100 each and you must pay each worker $25 per hour. Instructions in parts a and b, round your answers to two decimal places. In part c, enter your answer as a whole number. a. If you assign one worker per computer, what is the cost of inventorying a single item? b. What is the cost if you assign two workers per computer? $ What If you assign three? c. How many workers per computer should you assign if you wish to minimize the cost of inventorying a single Item? workers