A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 750 m long? Choose the correct choice:
A) 78sec  B) 83sec  C) 95sec  D) 99sec  E) 100sec
Speed = 240/24= 
<gadget id="calculator">240/24</gadget>
<output>10</output>
10 m/sec.   Required time= (240 + 750)/10= 
<gadget id="calculator">(240 + 750)/10</gadget>
<output>99</output>
99 sec.   Answer:99sec
<result>D</result>
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 750 m long?