An operator services one machine. It takes 1.0 minutes to unload/load the machine, after which the machines runs automatically for 3 minutes. The operator also needs to inspect each finished piece and touch it up, it not perfectly finished, this takes on average 0.5 minutes. The operator is paid $4.00/hr and the machine costs $10.00/hr to maintain. Find % idle time, productivity and unit cost. You must show the worker-machine chart to get credit for this problem. % idle time______________ Unit cost ______________ Productivity (pieces/hr) ______________ b) Using the optimum number of presses that can be assigned to the operator to produce the most pieces at lowest cost find % idle time, productivity and unit cost. You must draw a worker-machine chart for this situation to get credit for this problem. % idle time______________ Unit cost ______________ Productivity (pieces/hr) ______________ c) Assume that each piece can be sold for $1.00. What is the optimum number of presses that can be assigned to the operator to produce the maximum profit per hour? What is the profit/hour? (You dont need to draw any charts!) Number of presses __________________________________ Max profit/hr___________