A train 100 m in length crosses a telegraph post in 12 seconds. The speed of the train is?
Select the correct option.
A) 16 kmph  B) 30 kmph  C) 54 kmph  D) 18 kmph  E) 19 kmph
S = 100/12 * 18/5= 
<gadget id="calculator">100/12 * 18/5</gadget>
<output>30</output>
30 kmph   Answer: 30 kmph
<result>B</result>
A train 100 m in length crosses a telegraph post in 12 seconds. The speed of the train is?