In what time will a railway train 20 m long moving at the rate of 36 kmph pass a telegraph post on its way? Choose the most appropriate option
A) 6 sec B) 7 sec C) 8 sec D) 9 sec E) 2 sec
T = 60/36 * 18/5   = 2 sec   Answer:2 sec
<result>E</result>
In what time will a railway train 20 m long moving at the rate of 36 kmph pass a telegraph post on its way?