American Vending supplies vended food to a large

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 at American Vending.
(a) On average, ___ machines break down in one hour.
(b) On average, a worker repairs ___ machines in one hour. Write your answer(s) as 1, 2