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Question

Suvidha Express and Yuva Express are moving in opposite directions at 50/3 m/s and 50/2 m/s. Their lengths are 1100 km and 900 km respectively. The time taken by the slower train to cross the faster train in seconds is?

  • 100
  • 50
  • 48
  • 36
Answer- C

Relative speed = (50/2 + 50/3) m/s

= 125/3 m/sec.

Distance covered = (1100 + 900) m = 2000 m.

Required time = 2000 x 3/125 sec = 48 sec.