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Railways RRB (Assistant Loco Pilot) Solved Paper-2013

  • question_answer
    A car travelling with \[\frac{5}{7}\] of its usual speed covers 42 km in 1 hr 40 min 48 sec. What is the usual speed of the car?

    A) \[17\frac{6}{7}\,\,km/hr\]                       

    B) \[35\,\,km/hr\]

    C) \[25\,\,km/hr\]                

    D) \[30\,\,km/hr\]

    Correct Answer: B

    Solution :

     Usual speed of the car\[=\frac{42}{\frac{42}{25}}\times \frac{7}{5}\] \[=\frac{42\times 7\times 25}{42\times 5}=35\,\,km/hr\]


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