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Shawn's engineering club is taking a trip by bus to a robotics fair. The fair is 175 miles from Shawn's school. The bus driver plans to stop and refuel after 2 hours, then complete the trip. The bus driver plans to drive at an average speed of 50 miles per hour. How many hours will the second part of the trip take?

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raphealnwobi

The second part of the trip would take 1.5 hours.

Speed is the ratio of the total distance travelled to total time taken. It is given by:

Speed = distance/time

Since the total distance is 175 miles at an average speed of 50 mph. Hence the total time is:

Speed = distance/time

50 = 175/time

time = 175/50

Time = 3.5 hours

Since the first trip takes 2 hours, the time needed for the second trip is:

Total time = time for first trip + time for second trip

3.5 hours = 2 hours + Time for second trip

Time for second trip = 1.5 hours

The second part of the trip would take 1.5 hours.

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