A post office mail room receives mail and cancels the postage stamps. After first simplifying work, you make direct time study of the simplified job and obtain the following times in minutes: Tast Description Cycle 1 2 3 4 5 1 Empty mail bags .16 .31 .14 .15 .16 2 Straighten mail .60 .60 .60 .60 .60 3 Carry trays to reader .34 36 35 .37 .38 4 Cancellation machine .50 .50 .50 .50 .50 5 Empty trays .24 .24 .48 .27 .25 You further determine the following information about this job: 1. Tasks 2 and 4 are machine-controlled and cannot be speeded up by the operator. 2. You observed two irregularities while timing the job. These task times vary by more than 20 percent of each task's average time. 3. You rated the operator at 120 per cent when he was working. 4. Management and the worker's union have negotiated the following allowances for this--Per- sonal-30 minutes/8-hour shift. Unavoidable delay-10 minutes/8-hour shift. Fatigue-10