 
 <translate> Speed of the train in metres/sec = 72000/3600 = 20
Distance travelled by train to cross the platform = 30 * 20 = 600 = Length of train + Length of platform
Distance travelled by train to cross the man = 20 * 20 = 400 = Length of train
Length of platform = 600 - 400 = 200 So the answer is (A). <ibo> Speed nke ụgbọ okporo ígwè na mita / sec = 72000/3600 = 20 Ogologo njem ụgbọ oloko gafere na ikpo okwu = 30 * 20 = 600 = Ogologo ụgbọ oloko + Ogologo ikpo okwu Ebe ụgbọ okporo ígwè gafere iji gafee nwoke ahụ = 20 * 20 = 400 = Ogologo ụgbọ okporo ígwè Ogologo ikpo okwu = 600 - 400 = 200 Ya mere azịza ya bụ (A). 