Multiple Activity Chart

Determine the number of machines to be assigned to an operator and cost comparison. The setup time is $2\mathrm{.}5$ minutes and the run time is $6$ minutes. Machines can run in automatic mode without operator interactions. Assume the walking time between machines is negligible. Operator rate is $$20$ per hour and machine rate is $$50$ per hour.

a$)$ Draw the Multiple Activity Chart showing the two appropriate combinations of the assignment. Use the formulas covered in class to determine the two appropriate combinations of machines per operator.