A train crosses a platform of 170 m in 15 sec, same train crosses another platform of length 250 m in 20 sec. then find the length of the train? Choose the most appropriate option
A) 70	B) 88	C) 167	D) 197	E) 161

Rationale: "length of the train be ‘ x ’ x + 170 / 15 = x + 250 / 20 20 x + 3400 = 15 x + 3750 5 x = 350 x = 70 m answer : a"
Answer: A