At a sandwhich store, there are five sandwich assemblers and one cashier. Each sandwich assembler can assemble a sandwich in 1 minute. It takes the cashier 15 seconds to collect payment. Assume one customer orders one sandwich.
1. What is the capacity of the sandwhich store, in customers per minute? What is the bottleneck?
2. The manager estimates that 300 customers per hour show up on average during the peak hours. Does the sandwhich store have enough capacity to serve its customers during the peak hours?
3. Would hiring one more sandwich assembler solve the capacity problem? What is the new capacity of the sandwhich store if one more sandwich assembler is hired?
4. Disregarding part c), would hiring one more cashier solve the capacity problem? What is the new capacity of the sandwhich store if one cashier is hired?
5. Disregarding part c) and d), the manager claims that she can solve the capacity problem by promoting “Order Online”, which eliminates the need to collect payment. What is the minimum number of customers per hour that should order online (among 300 customers per hour) to solve the capacity problem?