A train 140 m in length crosses a telegraph post in 16 seconds. The speed of the train is? Answers:
A) 30.5 kmph B) 31.5 kmph C) 32.5 kmph D) 33.5 kmph E) 21.5 kmph
S = 140/16 * 18/5= 
<gadget id="calculator">140/16 * 18/5</gadget>
<output>63/2 = around 31.5</output>
31.5 kmph   ANSWER:31.5 kmph
<result>B</result>
A train 140 m in length crosses a telegraph post in 16 seconds. The speed of the train is?