Question

In a hour and 30 minutes shelf of patrol man drove to 272 miles what was his average during the shift

Answer 1

I am guessing that you want to calculate the average # of hours the patrolman drove. If that's the case, then:

272 miles
------------- = 181 1/3 miles per hour.
1.5 hrs

Note that this is highly unlikely. If the patrolman were actually able to drive that fast (I doubt it), he'd be a serious danger to himself and others.