$1.(0\mathrm{.}6$ pts$.$ total$)($Question $2$ on page $199$ of textbook$1)$ Melissas Photo Studio offers both

individual and group portrait options. The process flow diagram $[$below$]$ shows that all customers

must first register and then pay at one of two cashiers. Then, depending on whether they want a

single or group portrait they go to different rooms. Finally, everyone picks up their own finished

portrait.

a$)(0\mathrm{.}4$ pts$.)$ How long does it take to complete the entire process for a group portrait?

b$)(0\mathrm{.}2$ pts$.)$ What single activity is the bottleneck for the entire process, assuming the process

receives equal amounts of both groups and individuals?