A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?  Choose the correct choice from the following:	A) 65 sec	B) 89 sec	C) 100 sec	D) 150 sec	E) None
Sol.   Speed = [240/24] m/sec = 10 m/sec.   ∴ Required time = [240 + 650 / 10] sec   = 89 sec.   Answer 89 sec
<result>B</result>
A train 240 m long passed a pole in 24 seconds. How long will it take to pass a platform 650 m long?