A train crosses a platform of 110 m in 15 sec, same train crosses another platform of length 250 m in 20 sec. then find the length of the train? Select.
A) 150  B) 88  C) 77  D) 310  E) 52
Length of the train be â€˜Xâ€™   X + 110/15 = X + 250/20   4X + 440 = 3X + 750   X = 310m   Answer: 310
<result>D</result>
A train crosses a platform of 110 m in 15 sec, same train crosses another platform of length 250 m in 20 sec. then find the length of the train?