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4-60.

Ryan drives miles into the city early in the morning when traffic is light. He averages miles per hour. On the way home he gets caught in commute traffic and only averages miles per hour.

  1. What was the total distance Ryan traveled on his trip to and from the city?

    He went to the city and back.

  2. How long did he spend driving?

    The time spent going the time spent returning.

  3. What was his average speed for the combined trip to and from the city?