A train crosses a platform of 100 m in 15 sec, same train crosses another platform of length 250 m in 20 sec. then find the length of the train?	Choose one
A) 150
B) 88
C) 77
D) 62
E) 350

Rationale: "length of the train be â € ˜ x â € ™ x + 100 / 15 = x + 250 / 20 4 x + 400 = 3 x + 750 x = 350 m answer : e"
Answer: E