A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 610 m long?
Choose the correct choice from the following choices
A) 22  B) 89  C) 85  D) 278  E) 291
Speed = 240/24= 
<gadget id="calculator">240/24</gadget>
<output>10</output>
10 m/sec.   Required time= (240 + 610)/10= 
<gadget id="calculator">(240 + 610)/10</gadget>
<output>85</output>
85 sec.   Answer: 85
<result>C</result>
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 610 m long?