a train is 125 m long if the train takes 30 seconds to cross a bridge in 15 minutes find the length of the bridge .
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Answer:
Given:
Length of train = 125 m
Time to cross tree = 30 sec
Formula:
Time to cross the tree = length of train/speed of train
1 m/sec = 18/5 km/hr
Calculations:
S = D/T = 125/30 m/sec
⇒ (125/30) × (18/5)
⇒ 15 km/hr
∴ Speed of train is 15 km/hr
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Answer:
Solution
Verified by Toppr
Correct option is C)
Length of the train = 150 m
Length of the train = 500 m
∴ Total length =(500+150)m=650m
∴ Speed of the train =30650m/sec=2132m/sec
Now total length of the train and new bridge =(370+150)m=520m
∴ Time taken =65520×3sec=24sec.
Step-by-step explanation:
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