A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 30 seconds. What is the length of the goods train?
Choose the correct choice from the following answers:
A) 230 m
B) 350 m
C) 260 m
D) 270 m
E) None of these
Explanation:   Speed =[ 72 x (5/18) ]m/sec= 20 m/sec.   Time = 30 sec.   Let the length of the train be x metres.   Then,[ (x+250)/30 ]= 20   =&gt; x + 250 = 600   =&gt; x = 350. Answer: 350 m
<result>B</result>
A goods train runs at the speed of 72 kmph and crosses a 250 m long platform in 30 seconds. What is the length of the goods train?