Sample Observations of a Claims Processor Made Over a 160-Hour

Multiple Choice

Sample observations of a claims processor made over a 160-hour work month reveal that the worker produced a total of 384 completed claims forms.The performance rating was 80%.The worker was idle 20% of the time (so that idle time should be subtracted from the total time when computing the average observed time) .The allowance factor is 8%.What is the normal time per unit?

A) 0.42 minutes
B) 16.0 minutes
C) 17.4 minutes
D) 20.0 minutes
E) 21.7 minutes