2. Questions Bank
  3. SSC
  4. Quantitative Aptitude
  5. Average

SSC Quantitative Aptitude Average Question Bank Average (II)

  • question_answer
    A train moves with a speed of 30 km/h for 12 min and for next 8 min at a speed of 45 km/h. The average speed of the train is

    A) 37.5 km/h

    B) 36 km/h

    C) 48 km/h

    D) 30 km/h

    Correct Answer: B

    Solution :

    [b] Distance covered in \[(12\,min+8\,min)\] \[=\left( 30\times \frac{12}{60}+45\times \frac{8}{60} \right)km\]             \[=12\,\,km\] Total distance = 12 km, Total time = 20 min \[=\frac{20}{60}h=\frac{1}{3}h\] Average speed \[=\frac{12}{(1/3)}km/h\] \[=36\,km/h\]


You need to login to perform this action.
You will be redirected in 3 sec spinner