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PA 3-8 (Algo) Consider a four-step serial process... Consider a four-step serial process with processing times given in the following list. There is one machine at each step of the process, and this is a machine-paced process. Step 1: 18 minutes per unit Step 2: 16 minutes per unit Step 3: 32 minutes per unit Step 4: 25 minutes per unit Assuming that the process starts out empty, how long will it take (in hours) to complete a batch of 97 units? (Do not round intermediate calculations. Round your answer to nearest hour.) 53 hours