A goods train runs at the speed of 72 km/hr and crosses a 210 m long platform in 26 sec. What is the length of the goods train?
Answers:
A) 382  B) 782  C) 278  D) 310  E) 881
Speed = 72 * 5/18= 
<gadget id="calculator">72 * 5/18</gadget>
<output>20</output>
20 m/sec.   Time= 26 sec.   Let the length of the train be x meters.   Then, (x + 210)/26 = 20   x = 310 m.   Answer: 310
<result>D</result>
A goods train runs at the speed of 72 km/hr and crosses a 210 m long platform in 26 sec. What is the length of the goods train?