Example: Determining Standard Time

Given: The normal time to perform the regular work cycle is $3\mathrm{.}23$min. In addition, an irregular work element with a normal time $=1\mathrm{.}25$ min is performed every $5$ cycles. The PFD allowance factor is $15\%.$

Determine $($a$)$ the standard time and $($b$)$ the number of work units prod$$ced during an $8-$hr shift if the worker's pace is consistent with standard performance.