 
 <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 = 19 * 20 = 380 = Length of train
Length of platform = 600 - 380 = 220
The final answer: (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 = 19 * 20 = 380 = Ogologo ụgbọ okporo ígwè ahụ Ogologo nke ikpo okwu = 600 - 380 = 220 Azịza ya bụ: (A). 