 
 <translate> In 10s the train crosses the pole and in 30 sec the train crosses one more stationary train
In 20 sec the train travels a distance of 600 mtrs
Speed = 600/20 = 30 m/s = 30 (3600/1000) = 30 * 18/5 = 108 kmph So, the answer is (C). <ibo> N'ime 10 sekọnd ụgbọ oloko gafere osisi ahụ na 30 sekọnd ụgbọ oloko gafere otu ụgbọ oloko ọzọ na-akwụsị N'ime sekọnd iri abụọ, ụgbọ oloko ahụ na-aga njem dị narị mita isii. Speed = 600/20 = 30 m/s = 30 (3600/1000) = 30 * 18/5 = 108 kmph Ya mere, azịza ya bụ (C). 