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Zoey took 2.5 hours to bike the 60 km from her house to the beach. It took her 3.5 hours to bike the same distance back to her house. What was Zoey's average speed? Enter your answer into the box.

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sqdancefan

Answer:

  20 km/h

Step-by-step explanation:

Zoey rode a total of 120 km (there and back) in a total time of 6 hours (=2.5+3.5). Her average speed is given by ...

   speed = distance/time = (120 km)/(6 h) = 20 km/h