U.25 hours Question 40 5 pts A grocery store estimates that customers arrive at the rate of 24 per hour. The cashier can serve customers at a rate 25 per hour. Calculate the percentage of time the server is busy. 100% 96% 4% 25% 5 pts Question 41 A bar-code reader can process 6 units per second. how many can it process per hour? 3600 units