The following diagram shows a 4-step process that begins with Operation 1 and end with operation 4. The rates shown in each box represent the effective capacity of that operation.

a. Determine the capacity of this process 

b. Which action would yield the greatest increase in process capacity: (1) increase  the capacity of operation 1 by 15 percent; (2) increase the capacity of Operation 2 by 10 percent; or (3) increase the capacity of Operation 3 by 10 percent?   Operation 1 12/hr Operation 2 15/hr Operation 3 11/hr Operation 4 14/hr