Worthington Hills grocery store has five regular checkout lines and one express line (12 items or less). Based on a sampling study, it takes 11 minutes on the average for a customer to go through the regular line and 4 minutes to go through the express line. The store is open from 9 a.m. to 9 p.m. daily.
a. What is the store€™s maximum capacity (customers processed per day)?
b. What is the store€™s capacity by day of the week if the five regular checkout lines operate according to the schedule below? (The express line is always open.)

* A 3 means 3 regular checkout lines are open on Monday from 4 to 6 p.m.

Hours/Day 9-12 am. 12-4 p.m 4-6 p.m 6-9 p.m Mon Tue Wed Thur Fri Sat Sun