I need help with Part A and Part B

Worthington Hills grocery store has five regular checkout lines and one express line (12 items or less), Based on a sampling study, it takes 12 minutes on the average for a customer to go through the regular line and 6 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 )? Round your answer down to the nearest whole number. 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)? Do not round intermediate calculations. Round your answers down to the nearest whole number. Mon Wed Fri Sat Sun Hours /Day Tue Thur 2 2 4 5 9-12 a.m. 4 5 4 12-4 p.m. 2 2 2 * 3 5 4 W 4-6 p.m. 4 4 3 6-9 p.m. 5 3 4 3 5 4 "A "3" means three regular checkout lines are open on Monday from 4 to 6 p.m. The store's capacity by day of the week (customers per day): Sat Hours Mon Wed Thur Fri Sun Tue Totals