Consider a four-step serial process with the number of workers at each step and processing times given in the list below:

Process Step Number of Workers Time per Customer (in minutes)

1 3 1

2 4 17

3 4 8

4 1 5

Assuming that the process starts out empty and is worker-paced, how long will it take (in minutes) to serve 16 customers? (round to nearest minute)

__________ minnutes to serve 16 customers