Subject
Quantitative Aptitude
Topic
Speed & Distance
A train 800 metres long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
A train 800 metres long is running at a speed of 78 km/hr. If it crosses a tunnel in 1 minute, then the length of the tunnel (in meters) is:
ক)
130খ)
360গ)
500ঘ)
540Explanation
Speed = (78 x (5/18)) m/sec = (65/3) m/sec. Time = 1 minute = 60 seconds. Let the length of the tunnel be x metres. Then, ((800 + x)/60) = 65/3 => 3(800 + x) = 3900 => x = 500.Related questions
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