The time taken for a train to pass a pole is 18 seconds, while it taken 33 seconds to cross a bridge measuring 300 meters. Calculate the length of the train.
The time taken for a train to pass a pole is 18 seconds, while it taken 33 seconds to cross a bridge measuring 300 meters. Calculate the length of the train.
एक रेलगाड़ी को एक खंभे को पार करने में 18 सेकंड का समय लगता है, जबकि 300 मीटर लंबे पुल को पार करने में उसे 33 सेकंड का समय लगता हैं। रेलगाड़ी की लंबाई की गणना कीजिए।
Detailed Solution & Logic
Correct Answer:
360 meters/ मीटर
Let length of train = L meters
Pass a pole is 18 seconds
Speed = $ \frac {L} {18} $
When the train crosses a bridge of length 300 m, it covers L+300.
Speed = $\frac {L+300}{33} $
$ \frac {L} {18} $ = $\frac {L+300}{33} $
33L=18(L+300)
33L=18L+5400
33L-18L=5400
15L=5400
L=360 m
Answer = 360 meters
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