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Can you explain the answer of this question below:
Two trains each of length 50 m are approaching each other on parallel rails. Their velocities are 10 m/sec and 15 m/sec. They will cross each other in -
  • A:
    2 Sec
  • B:
    4 Sec
  • C:
    10 Sec
  • D:
    6 Sec
The answer is a.
Verified Answer
Can you explain the answer of this question below:Two trains each of l...
Total distance =50+50=100
 Total speed=10+15=25 s.
As we know, s= d/t [s = speed (meters/second)
d = distance traveled (meters)
t = time (seconds)] 
we get t= d÷s
so, t=100/25
t= 4 sec
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Most Upvoted Answer
Can you explain the answer of this question below:Two trains each of l...
It is b . Total distance =50+50=100 and Total speed=10+15=25 s. Using S= D÷T we get T= D÷S so T=100/25 = 4 sec
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Community Answer
Can you explain the answer of this question below:Two trains each of l...
I think the answer should be 2s...How can it be 4s...can anybody explain it to me?
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