Aptitude Problems on Trains

  1. km/hr to m/s conversion:
    a km/hr = a x 5 m/s.
    18
  2. m/s to km/hr conversion:
    a m/s = a x 18 km/hr.
    5
  3. Formulas for finding Speed, Time and Distance
  4. Time taken by a train of length l metres to pass a pole or standing man or a signal post is equal to the time taken by the train to cover l metres.
  5. Time taken by a train of length l metres to pass a stationery object of length bmetres is the time taken by the train to cover (l + b) metres.
  6. Suppose two trains or two objects bodies are moving in the same direction at um/s and v m/s, where u > v, then their relative speed is = (u - v) m/s.
  7. Suppose two trains or two objects bodies are moving in opposite directions at um/s and v m/s, then their relative speed is = (u + v) m/s.
  8. If two trains of length a metres and b metres are moving in opposite directions atu m/s and v m/s, then:
    The time taken by the trains to cross each other = (a + b) sec.
    (u + v)
  9. If two trains of length a metres and b metres are moving in the same direction atu m/s and v m/s, then:
    The time taken by the faster train to cross the slower train = (a + b) sec.
    (u - v)
  10. If two trains (or bodies) start at the same time from points A and B towards each other and after crossing they take a and b sec in reaching B and A respectively, then:(A’s speed) : (B’s speed) = (b : a)

     

 Problems on Trains Quiz No1  Problems on Trains Quiz No2  Problems on Trains Quiz No3