A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 600 m long?  Choose the correct choice from the following options.
A) 80sec	B) 84sec	C) 90sec	D) 94sec	E) 100sec
Speed = 240/24= 
<gadget id="calculator">240/24</gadget>
<output>10</output>
10 m/sec.   Required time= (240 + 600)/10= 
<gadget id="calculator">(240 + 600)/10</gadget>
<output>84</output>
84 sec.   Answer:84sec
<result>B</result>
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 600 m long?