In how many seconds will a train 180 meters long pass an oak tree, if the speed of the train is 36 km/hr?
Choose the correct choice from the following
A) 14  B) 16  C) 18  D) 20  E) 22
speed = 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 m/s   time= 180/10= 
<gadget id="calculator">180/10</gadget>
<output>18</output>
18 seconds   The answer is 18.
<result>C</result>
In how many seconds will a train 180 meters long pass an oak tree, if the speed of the train is 36 km/hr?