The starting work part costs $2.25 in a batch production operation. Batch quantity = 100 parts. Each cycle, part handling time = 0.50 min, and operation time = 1.67 min. Setup time = 50 min. Equipment cost rate = $35.00/hr, and labor cost rate = $18.00/hr, including overhead costs. There is no tool change or tool cost in the operation. The machine tool is 100% reliable, and the scrap rate = 5%. Determine the number of hours required to complete the batch."