<human>:  Keegan is in school for 7.5 hours each day and he is taking 7 classes. He has history and chemistry classes for a combined total of 1.5 hours. How many minutes does Keegan spend in one of his other classes on average?
<bot>: How many other classes does Keegan have? ** He has 7-2=<<7-2=5>>5 other classes
How many hours total does Keegan spend on his other classes? ** 7.5 hours - 1.5 hours = <<7.5-1.5=6>>6 hours
How many minutes total does Keegan spend on his other classes? ** 6 hours = <<6*60=360>>360 minutes
How many minutes on average does Keegan spend on his other classes? ** 360/5 = <<360/5=72>>72 minutes
How many minutes does Keegan spend in one of his other classes on average? ** Keegan spends 72 minutes in one of his other classes.
#### 72