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5th Class Mathematics Arithmetic Question Bank Arithmetic

  • question_answer
    A man covers a certain distances by car, driving at a speed of 70 km/hr and he returns back to the starting point riding on a scooter at 55 km/hr. Find his average speed for the whole journey.

    A)  61.0 km                       

    B)  61.6 km

    C)  67.4 km                       

    D)  69.7 km

    Correct Answer: B

    Solution :

     Average speed \[=\frac{2\times 70\times 55}{70+55}km/hr\] \[=61.6km/hr\]


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