in a $40-$cycle worker$-$machine time study, operator time is $0\mathrm{.}60$ minutes for each cycle and machine time is $1\mathrm{.}40$ minutes for each cycle. The employee performance rating is $115\%$ and the additional times in an $8-$hour shift are personal need time, $30$ minutes, fatigue share $20$ minutes, delay share $30$ minutes. Calculate the standard time for combined worker machine operation.