3 answers:
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Answer: 2.32 people per hour
Explanation:
From the question, we are informed that Bobby the Barber is thinking about advertising in the local newspaper since he is idle 45 percent of the time and that currently, customers arrive on average every 40 minutes.
For Bobby to be busy 85 percent of the time, the arrival time needs to be 2.32 people per hour.
Check the attached file for the solution.
