Using the calculated standard times from the previous time study data problem, find the optimal number of machines that should be assigned to an operator. Use the elemental standard times that you calculated (which were in minutes) to determine a value for L & W for this calculation. Assume an automatic machine cycle time (M) of 3.0 minutes. The operator is paid $12.00/h and the machines cost $42/hr to run.

Determine the value for "N" as well as the unit cost per part for the two assignment alternatives.

Enter total expected cost (TEC) for N rounded up (the higher machine count of the 2 alternative)

1 2 N 3 4 Element & Description Remove machined part Load machine Adjust machine with next part, for next cycle start automatic cycle inspect machined part Cycle NT NT NT INT 1 0.32 1.18 0.23 0.96 2 0.46 1.08 0.30 1.00 3 0.38 0.88 0.27 0.89 4 0.34 1.00 0.30 0.87 5 0.36 1.19 0.25 0.59 6 0.32 1.16 0.25 0.97 7 0.32 0.96 0.30 0.81 8 0.40 1.16 0.27 0.70 19 0.36 1.04 0.33 0.97 10 0.36 1.29 0.30 0.76 Summary Total NT Number of Cycles 10.0 10.0 10.0 10.0 Average NT % Allowance 10.0 12.0 12.0 12.0 Elemental Standard time