Please answer with steps shown

PROBLEM I a. An industrial plant needs to make 5,000 parts per day to meet demand. Each month c0ntains 20 working days, each of which allows for 3 separates 8-hour shifts. i. If a worker can produce 10 parts/hour, how many workers are needed on each shift (5 points)? ii. If each shift has 100 workers, what is the productivity of an individual worker(partsfhour) (Spoints)? b. The local fast-food store experienced the following number of customers on the night shift: Hours ------ Customers 12 AM 23 1 AM 20 2 AM 15 3 AM 5 4 AM 2 5 AM 1 If the store was staffed by two workers, what was the average productivity per worker, in customers/hour(10 points)