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25 March, 18:07

2. Mrs. Walline travelled 60 km in 1 hour and then 2 more hours to travel 40 km on city

streets. What was her average speed?

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Answers (1)
  1. 25 March, 22:03
    0
    Answer: 33.3 km/hr

    Explanation:

    Given that,

    distance travelled = 60 km

    Time taken = 1 hour

    Time taken on city streets = 2 hours

    distance travelled on city streets = 40 km

    Average speed = ?

    Since average speed is total distance travelled per unit time, it is obtained by dividing the total distance travelled by the total time taken

    i. e Average speed = (total distance / total time taken)

    Total distance travelled by Mrs. Walline = (60km + 40km)

    = 100km

    Total time taken = 1 hour + 2 hours

    = 3 hours

    So, Av. Speed = 100km / 3hours

    Av. Speed = 33.3 km/hr

    Thus, Mrs. Walline's average speed was 33.3 km/hr
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