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Numerical Ability
Time Distance and Speed
Two trains move in the same direction at speeds 50 kmph and 32 kmph respectively. A man in the slower train observes that 15 seconds elapse before the faster train completely passes by him. What is the length of faster train?
(a) 100m
(b) 75m
(c) 120m
(d) 50m
Read Solution (Total 2)
-
- since both trains move in same direction so:
average speed=50-32=18kmph=5mps
speeed=length of train /time
length of train=5*15=75m
hence (b) is the ans. - 14 years agoHelpfull: Yes(21) No(0)
- the speed of faster train with respect to the man=50-32=18 km/hr.
now train passes the man in 15 seconds
hence length=speed*time=18*(1000/3600)*15=75m - 14 years agoHelpfull: Yes(7) No(0)
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