Multiple Choice Questions on A person travels 600 km by train at 80 km hr 800 km by ship at 40 km hr 500 km by aeroplane at 400 k........... for Mathematics - All Exams Preparation

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Multiple Choice Questions

A person travels 600 km by train at 80 km hr 800 km by ship at 40 km hr 500 km by aeroplane at 400 k...........

Quantitative Aptitude ( CCS) Time & distance
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    A person travels 600 km by train at 80 km/hr 800 km by ship at 40 km/hr, 500 km by aeroplane at 400 km/hr and 100 km by car at 50 km/hr. What is the average speed for the entire distance?

    65 5/123 km/hr

    Correct Answer

    60 km/hr

    Incorrect Answer

    60 5/123 km/hr

    Incorrect Answer

    62 lm/hr

    Incorrect Answer
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    Explanation:

    Total Distance travelled = (600 + 800 + 500 + 100)km = 2000 km

    Total Time taken = (600/80 + 800/40 + 500/400 + 100/50)hrs = 123/4 hrs

    Average Speed = (2000 x 4/123)km/hr = (8000/123)km/hr = 65 5/123 km/hr

    Hence, option 1 is the correct answer.

    By: Amit Kumar
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