Question

Lauren's science class is taking a field trip to the nearest natural history museum. The museum is 62.5 miles from Lauren's school. The class plans to stop after 30 minutes, or 0.5 hours, to visit a local wildlife refuge. 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?
Write your answer as a whole number or a decimal.

Answer 1

The second part of the trip lasted 0.54 hours

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

Average speed = total distance / total time

Since the total distance is 62.5 miles and the average speed is 50 miles per hour, hence:

Average speed = total distance / total time

60 = 62.5 / total time

Total time = 25/24 hours

The first part of the journey takes 0.5 hours, hence:

Time for second part = 25/24 - 0.5 = 0.54 hours

Therefore the second part of the trip lasted 0.54 hours

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