1.A train 210 m long took 12 seconds to pass a 90 m long tunnel. Find the speed of
the train.
2.A train 270 m long is running at 80 km/hr. How much time will it take to cross a platform 130m long?
plz answer fast.......
Answers
Answered by
1
Answer:
Total distance =(210+90)n
=300 m
∴ time =12 sec
∴ speed =
time
distance
∴ speed =
12
300
∴ speed =25 sec
Answered by
1
Answer:
Total distance =(210+90)m
=300 m
time =12 sec
speed = distance /time
speed = 300 /12
∴ speed =25 sec
Step-by-step explanation:
Speed of the train = 80 km/hr = 80 x 1000/3600 80 x 5/18 = 200/9 m/sec
Distance = length of the trian + length of the platform = 130 m + 270 m = 400 m
Time = Distance / Speed
= 400x9 / 200
= 2 x 9
= 18 sec.
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