Multiple Choice Questions on A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute If the radi........... for CDS Exam Preparation

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Multiple Choice Questions

A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute If the radi...........

Quantitative Aptitude (CDS) Time & distance
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    A boy is cycling such that the wheels of the cycle are making 140 revolutions per minute. If the radius of the wheel is 30 cm, the speed of the cycle is

    15.5 km/hour

    Incorrect Answer

    15.84 km/hour

    Correct Answer

    16 km/hour

    Incorrect Answer

    16.36 km/hour

    Incorrect Answer
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    Explanation:

    Distance moved by the cycle in 1 minute=140×2π×30cm
    =140×2×22/7 x 30/100000km

    Therefore, distance moved by the cycle in 60 minutes
    =140×2×22/7×30/100000 x 60 km
    =15.84km
    Thus, the speed of the cycle is 15.84 km/hour.

    By: Munesh Kumari
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