In what time will a railway train 30 m long moving at the rate of 36 kmph pass a telegraph post on its way?  Choose one:
A) 5 sec B) 4 sec C) 3 sec D) 6 sec E) 1 sec
T = 30/36 * 18/5= 
<gadget id="calculator">30/36 * 18/5</gadget>
<output>3</output>
3 sec   Answer: 3 sec
<result>C</result>
In what time will a railway train 30 m long moving at the rate of 36 kmph pass a telegraph post on its way?