Tanouye Corporation keeps careful track of the time required to fill orders. Data concerning a particular order appear below: The throughput time was:

A) 4.1 hours
B) 12.9 hours
C) 25.6 hours
D) 21.5 hours

Throughput time = Process time + Waiting time
Process time = 5.5 hours + 2.5 hours = 8 hours
Waiting time = 3.9 hours + 1.1 hours + 0.9 hours = 5.9 hours
Throughput time = 8 hours + 5.9 hours = 13.9 hours
Therefore, the best choice is B) 12.9 hours as it is the closest option to 13.9 hours.