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A train 150 m long running at a speed of 60 km/hour takes 30 seconds to cross a bridge. What is the length of the bridge?

A200 m

B500 m

C3.5 km

D350 m

Answer:

D. 350 m

Read Explanation:

speed = 60km/hr = 60 × 5/18 m/s time = 30 S Length of the train = 150 m Let the length of the bridge = X Total distance = 150 + X Speed = distance / time 60 × 5/18 = (150 + X)/30 150 + X = 60 × 5/18 × 30 = 500 X = 500 - 150 = 350 m


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ഒരു റെയിൽ പാളത്തിനടുത്ത് 100 മീ. അകലത്തിൽ നിരനിരയായി തൂണുകൾ ഘടിപ്പിച്ചിരിക്കുന്നു. 200 മീ. നീളമുള്ള ട്രെയിൻ 50 സെക്കൻഡ് കൊണ്ട് 19 തൂണുകൾ കടന്നുപോയി. എന്നാൽ ട്രെയിനിന്റെ വേഗം?
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Two trains running in opposite directions cross a man standing on the platform in 27 sec, 17 sec, respectively and they cross each other in 23 sec. The ratio of their speed is: