Multiple Choice Questions on If P travelled the first half of a journey at 40 km hr and the remaining distance at 50 km hr what i........... for RRB(NTPC) Exam Preparation

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Multiple Choice Questions

If P travelled the first half of a journey at 40 km hr and the remaining distance at 50 km hr what i...........

Quantitative Aptitude (RRB NTPC) Time & distance
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    If P travelled the first half of a journey at 40 km/hr and the remaining distance at 50 km/hr, what is the average speed of his travel? 

    44.44 km/hr 

    Correct Answer

    53.33 km/hr 

    Incorrect Answer

    45 km/hr

    Incorrect Answer

    60 km/hr 

    Incorrect Answer
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    Explanation:
    Let total distance = 100 km
    ∴ ATQ,
    Total time= 50/40 + 50/50
    =5/4 + 1= 9/4 hr
    ∴ Average speed =100*4/9=400/9km/hr
    = 44.44 km/hr

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