Join Examsbook
1906 0

Q:

The Ajmer express can move at 45 km./hr. without its rake and the speed is diminished by a constant that varies as the square root of the number of wagons attached. If it is known that with 9 wagons, the speed is 30 km./hr., what is the greatest number of wagons with which the train can just move?

  • 1
    63
  • 2
    64
  • 3
    80
  • 4
    81
  • Show AnswerHide Answer
  • Workspace

Answer : 4. "81"

Are you sure

  Report Error

Please Enter Message
Error Reported Successfully