We have time studied an operation and have a normalized time of $66$ seconds We need to apply a $20\%$ PF&D Allowance

What is my standard time?

What is my production rate per hour?

I have an observation time of $33$ seconds

I rate the employee at $90\%-$ What is my normalized time $?$

We allow a $17\%$ PF&D$-$ What is my standard time

What is my production rate per hour

Explain the biggest advantage$($s$)$ & disadvantage$($s$)$ for doing time studies

Advantage$($s$)$

Disadvantage$($s$)$