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You are driving home from college steadily at 95km/hour for 130km. It begins to rain and you slow to 65km/hour. You arrive home after driving 3 hours and 20 minutes. How far is your hometown from college?

  • math -

    Work with the time of each section, since you know the total time.

    Time at 95kph = 130/95 h
    Time at 65 kph = t

    130/95 + t = 10/3
    t = 1.965 h

    So, total distance is 130km + 65*1.965 = 130+127.7 = 257.7km

  • math -

    drt

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