$1)$ Multiple Activity Chart:

Determine the number of machines to be assigned to an operator.

The setup time is $2\mathrm{.}5$ mins and the run time is $6$ mins. Machine can run

automatically without supervision.

Assume walking time is negligible between the machines.

Operator rate is $$20/$hour and machine rate is $$50/$hour$.$ Draw the multiple activity

chart and show the two appropriate combinations of the assignment.