A train 500 m long passed a pole in 50 sec. How long will it take to pass a platform 1000 m long?  Choose the correct choice from the following answers.
A) 28 sec B) 89 sec C) 85 sec D) 150 sec E) 15 sec
Speed = 500/50= 
<gadget id="calculator">500/50</gadget>
<output>10</output>
10 m/sec.   Required time= (500 + 1000)/10= 
<gadget id="calculator">(500 + 1000)/10</gadget>
<output>150</output>
150 sec.   Answer:150 sec
<result>D</result>
A train 500 m long passed a pole in 50 sec. How long will it take to pass a platform 1000 m long?