Question 356983
time = distance/speed
first leg
575/200 = 2.875 hours
..
second leg 
325/200 = 1.625 hours
..
stopover time = 0.5 hours
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total time = 2.875+1.625+0.5= 5 hours
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total distance = 575+325=900 miles
total time = 5 hours
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speed = distance /time
900/5= 180 mph is the average speed between Big lake to pine city
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