In what time will a railway train 40 m long moving at the rate of 36 kmph pass a telegraph post on its way?  Choose the correct choice from the following:
A) 3 sec
B) 4 sec
C) 5 sec
D) 6 sec
E) 7 sec
T = 40/36 * 18/5= 
<gadget id="calculator">40/36 * 18/5</gadget>
<output>4</output>
4 sec   ANSWER:4 sec
<result>B</result>
In what time will a railway train 40 m long moving at the rate of 36 kmph pass a telegraph post on its way?