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  1. A boy rides his bicycle 10 km at an average speed of 12 km/hr and again travels 12 km at an average speed of 10 km/hr. His average speed for the entire trip is approximately?
    2. A.
    10.4 km/hr
    B.
    10.8 km/hr
    C.
    11 km/hr
    D.
    12.2 km/hr

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    Workspace

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    Answer : Option B

    Explanation :

    Total distance traveled = 10 + 12 = 22 km /hr.

    Total time taken = 10/12 + 12/10 = 61/30 hrs.

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