A train 350m long is travelling at a speed of 54 km/h . How long will it take to cross a bridge 550m long?
Answers
Answered by
15
Answer:
Total distance =350+550=900
speed =54×5/18=15m/s
15 m in 1 second then 900m in x s
it is inverse variation
60 sec
Answered by
41
Step-by-step explanation:
A train is 350m,
total distance = 350 + 550
= 900m
speed of train = 54km / hr
=( 54 x (10^3 )m) /(60 x 60)s
= (54 x (10) m) / 36s
= (54 x 5 ) / 18
= 15 m / sec
speed = distance /time
time = distance / speed
= 900 / 15
= 60 sec
train will take 60sec to cross a bridge 550m long
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