Question: A hospital sees 500 people a day.  Each patient is seen for an average of 24 minutes.  The doctors charge $150 an hour to the hospital and the hospital charges the patients $200 an hour.  How much profit does the hospital make from these visits?
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Answer: 
The hospital sees patients for 500*24=12000 minutes a day
That means they see patients for 12000/60=200 hours a day
They profit 200-150=$50 per hour
So they make a profit of 200 hours * $50/hour = $10000 a day from patient visits