A hotel hosts banquets for conferences in a large ballroom with tables of eight. Servers must get the meals from the kitchen, bring them out to the tables, and then place the meals on the tables. It takes four minutes to get the meals, bring them out to the tables, and then 15 seconds to serve each guest. Use the Service Capacity Excel template to answer the following questions.

a. If 20 servers are available, how many tables can be served in 20 minutes?

b. The hotel wants to be able to serve 140 tables in 20 minutes. How many servers are needed?