In what time will a railway train 20 m long moving at the rate of 36 kmph pass a telegraph post on its way?  Select the correct option:  A) 5 sec  B) 4 sec  C) 3 sec  D) 6 sec  E) 2 sec
T = 20/36 * 18/5= 
<gadget id="calculator">20/36 * 18/5</gadget>
<output>2</output>
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?