A restaurant has 30 tables (14 2-tops and 16 4-tops). The business on Thursday is as follows. a. During the first hour of lunch time (11am to 12noon), 28 tables and 50 seats are occupied. The average dining time is one hour, and the average check is $25 per person. b. During the first hour of dinner time (6pm to 7pm), 20 tables and 60 seats are occupied. The average dining time is one hour, and the average check is $50 per person