Aptitude & Reasoning
Quantitative Aptitude
Objective
Nov 23, 2012
A train running 78km/hr and the length of train is 800 meter. If it crosses a tunnel in 1 minute, then the length of the tunnel is?
Detailed Explanation
Speed = (78 * 5/18) m/sec
= 65/3 m/sec
length of tunnel is x meter
Then (800 + x)/60 = 65/3
3(800+x) = 3900
x = 500 meter
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