In what time will a train 100 m long cross an electric pole, it its speed be 54 km/hr?
Choose the correct choice from the following answers:
A) 2.5
B) 2.9
C) 6.67
D) 2.8
E) 2.1
Speed = 54 * 5/18= 
<gadget id="calculator">54 * 5/18</gadget>
<output>15</output>
15 m/sec   Time taken= 100/15   = 6.67 sec.   Answer:6.67
<result>C</result>
In what time will a train 100 m long cross an electric pole, it its speed be 54 km/hr?