A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 660 m long?	Choose the correct option
A) 22	B) 90	C) 277	D) 278	E) 291
Speed = 240/24= 
<gadget id="calculator">240/24</gadget>
<output>10</output>
10 m/sec.   Required time= (240 + 660)/10= 
<gadget id="calculator">(240 + 660)/10</gadget>
<output>90</output>
90 sec.   Answer: 90
<result>B</result>
A train 240 m long passed a pole in 24 sec. How long will it take to pass a platform 660 m long?