📢 Too many exams? Don’t know which one suits you best? Book Your Free Expert 👉 call Now!

  • google app store apple app store
  • ✖

      Question

      A boy goes to school with a speed of 45 km/h and comes

      back with a speed of 30 km/h. find his average speed?
      A 48 km/hr Correct Answer Incorrect Answer
      B 36 km/hr Correct Answer Incorrect Answer
      C 37.5 km/hr Correct Answer Incorrect Answer
      D 56.25 km/hr Correct Answer Incorrect Answer

      Solution

      Since the distance travelled by a boy (going to school and coming back from school) is equal. So, average speed = 2xy/(x + y) Average speed = (2 x 45 x 30)/(45 + 30) Average speed = (2 x 45 x 30)/75 = 36 km/hr

      Practice Next
      ask-question