A train having a length of 240 m passes a post in 24 seconds. How long will it take to pass a platform having a length of 670 m?  Select the correct option
A) 120 sec  B) 91 sec  C) 89 sec  D) 80 sec  E) 85 sec
Explanation:   v = 240/24 (where v is the speed of the train) = 10 m/s   t = (240+670)/10= 
<gadget id="calculator">(240+670)/10</gadget>
<output>91</output>
91 seconds   Answer: Option 91 sec
<result>B</result>
A train having a length of 240 m passes a post in 24 seconds. How long will it take to pass a platform having a length of 670 m?