Consider the following simple assembly process:

image.png

The numbers below each step refer to the time necessary to process one unit of the product at that step.

The process is staffed by three operators with one operator assigned to each of the three steps. Assume no set ups are required, processing times are constant and no Work in Process $($WIP$)$ is permitted beyond that actually being worked on at each process step $($i$.$e$.,$ there are no buffers between process steps$).$ What is the utilization of each operator if demand is $10$ units$/$hour$?$