A company has a central parts cage for mechanics to pick up supplies. Mechanics arrive at the cage at an average rate of 24 per hour. The only clerk Helen working in the cage can complete a mechanic's part request in an average of 2 minutes. The cost of mechanics' time is $30 per hour and the cost of the clerk's time is $20 per hour. (a) Calculate the total labor cost per hour under the current situation: (b) If the company rents an electric-controlled storage bin system at a cost of $32 per hour and the system can increase Helen's speed (service rate) by 50%, calculate the new total cost per hour: (c) If the company replaces Helen by Ashley who can check out one mechanic in 1 minute on average and her wage rate is $30 per hour, calculate the new total cost per hour: (d) If the company add another clerk (Amber) to work with Helen (not Ashley) and Amber has the same wage rate and service rate as Helen, calculate the new total cost per hour: (e) Clearly present your recommendation with a brief justification (why should the company accept your recommendation)