It takes an operator 1 minute to service a machine and 0.1 minute to walk to the next machine. Each machine runs automatically for 3 minutes, the operator earns $10 per hour and the machines cost $20 per hour to run. How many machines that the operator can service? 6 3 5 4
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The operator takes 1 minute to service the machine and 0.1 minute to walk to the next machine, so it takes a total of 1 + 0.1 = 1.1 minutes. Show more…
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