Q. Bill's Barbershop has two barbers available to cut consumers' hair. Both barbers provide roughly the same experience also skill, but one is just a little bit slower than the other. The process shows which all consumers go through steps B1 also B2 also then can be served at either of the two barbers at step B3. The process ends all consumers at step B4. The numbers in parentheses indicate the minutes it takes those activity TP process consumers.

a. Explain how long does it take the average consumer to complete this process?

b. Illustrate what single activity is the bottleneck for the entire process?

c. Explain how many consumers can this process serve in an hour?