12. The length of Kanpur Mail is 120 m and that of Punjab
Mail is 80 m. These two trains are running in the same
direction with speeds of 40 km/h and 50 km/h
respectivley. The time taken by them to cross each
other is
(a) 8 seconds
(b) 72 seconds
(d) 12.5 seconds
(c) 115 seconds
Answers
Answered by
3
Answer:
c is the correct answer to this question
Answered by
1
Answer:
total D =200m
relative speed =50-40=10 km / hr
time = 200*3600/10*1000
= 72 sec
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