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:
Choose the most appropriate option
A) 130  B) 360  C) 500  D) 540  E) 580
L = 800 m   S = 78kmph = 65/3 mps   Time to pass tunnel = 1min = 60 sec   t.f (800+X)/(60) = (65/3)   =500   ANSWER:500
<result>C</result>
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: