check markLesson 2-5, Example 4 Check Understanding

  1. On his way to work from home, your uncle averaged only 20 miles per hour. On his drive home, he averaged 40 miles per hour. If the total travel time was 1 1/2 hours, how long did it take him to drive to work?
    1. 1/2 h
    2. 3/4 h
    3. 5/6 h
    4. 1 h

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