In how many seconds will a train 100 meters long pass an oak tree, if the speed of the train is 36 km/hr?  Answers.
A) 6  B) 8  C) 10  D) 12  E) 14
speed = 36 * 5/18= 
<gadget id="calculator">36 * 5/18</gadget>
<output>10</output>
10 m/s   time= 100/10= 
<gadget id="calculator">100/10</gadget>
<output>10</output>
10 seconds   The answer is 10.
<result>C</result>
In how many seconds will a train 100 meters long pass an oak tree, if the speed of the train is 36 km/hr?