Multiple Choice Questions on An aeroplane flies with an average speed of 756 km hr A helicopter takes 48 hours to cover twice the........... for Mathematics - All Exams Preparation

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    An aeroplane flies with an average speed of 756\ km/hr. A helicopter takes 48 hours to cover twice the distance covered by aeroplane in 9 hours. How much distance will the helicopter cover in 18 hours? (assuming that flights are non-stop and moving with uniform speed)

    5014 km

    Incorrect Answer

    5140 km

    Incorrect Answer

    5130 km

    Incorrect Answer

    5103 km

    Correct Answer
    Explanation:

    Distance covered by aeroplane in 9 hours = Speed × Time = 9 × 756 = 6804 km
    ∴ Speed of helicopter
    = (2 × 6804)/48
    = 283.5 kmph
    ∴ Distance covered by helicopter in 18 hours
    = (283.5 × 18) km
    = 5103 km


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