How much time does a train 225 metres long running at 90 km/hr take to pass a pole?  Choose the correct choice from the following answers
A) 7.9s
B) 2.5s
C) 7.5s
D) 9s
E) 7.4s
Explanation:   90 km/hr = 90 * 5/18= 
<gadget id="calculator">90 * 5/18</gadget>
<output>25</output>
25 m/s   Speed= distance/time; v = d/t   25 = 225/t   t = 9s   ANSWER: 9s
<result>D</result>
How much time does a train 225 metres long running at 90 km/hr take to pass a pole?