Pieces produced per cycle: $8$

Average measured cycle time: $8\mathrm{.}36$min

Average measured effort time per cycle: $4\mathrm{.}62$min

Average rapid traverse time: $0\mathrm{.}08$min

Average cutting time power feed: $3\mathrm{.}66$min

Performance rating: $115$ percent

Allowance $($machine time$)$: $10$ percent

Allowance $($effort time$)$: $15$ percent

CHAPTER $10$ Time Study

The operator works on the job a full $8-$h day and produces $380$ pieces. How many standard hours does the operator earn? What is the operator's efficiency for the $8-$h day?