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SSC Quantitative Aptitude Speed, Time and Distance Question Bank Speed Time and Distance (II)

  • question_answer
    If a boy walks from his house to school at the rate of 4 km/h, he reaches the school 10 min earlier than the scheduled time. However, if he walks at the rate of 3 km/h, he reaches 10 min late. Find the distance of his school from his house.

    A) 5 km

    B) 4 km

    C) 6 km

    D) 4.5 km

    Correct Answer: B

    Solution :

    [b] Let the distance of the school of the boy from his house be d km. Then,    \[\frac{x}{3}-\frac{x}{4}=\frac{20}{60}\] \[\Rightarrow \]   \[\frac{x}{12}=\frac{1}{3}\] \[\Rightarrow \] \[x=4\,km\]


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