(American Vending) American Vending supplies vended food to a large university. Because students often kick the machines out of anger and frustration, management has a constant repair problem. The machines break down in a mean of 1/3 hours with a standard deviation of 1/3 hours. One repair worker can service one machine in a mean of 1/5 hours with a standard deviation of 1/5 hours. Currently, three repair workers are hired. (American Vending) Each repair worker is paid $4 per hour and downtime costs the company $25 per hour per machine. Calculate total cost (= worker cost + downtime cost). (Note: To avoid rounding errors, use exactly the same average number of down machines (L) in the previous question.) --- For one repair worker, total cost is ___. --- For two repair workers, total cost is ___. --- For three repair workers, total cost is ___.