The Speed of The Truck must be Increased by :

A truck can finish a certain journey in 10 hours at a speed of 48 km/h. In order to cover same distance in 8 hours, the speed of the truck must be increased by

  1. 6 km/h
  2. 7.5 km/h
  3. 12 km/h
  4. 15 km/h
Anurag Mishra Professor Asked on 12th October 2015 in Maths.
Add Comment
  • 1 Answer(s)

    Answer: (3) 12 km/h

    Explanation:-
    A truck can finish a certain journey in 10 hours at a speed of 48 km/h.
    Then, the total distance covered by truck = 48 x 10
    = 480 km

    In a order to cover same distance in 8 hours,
    Then, the speed of truck = 480/8
    = 60 km/h

    Then, the speed of the truck must be increased by = 60 – 48
    = 12 km/h

    Hence. the answer is (3) 12 km/h.

    Anurag Mishra Professor Answered on 14th October 2015.
    Add Comment
  • Your Answer

    By posting your answer, you agree to the privacy policy and terms of service.