 
<translate> Ajụjụ bụ: Ụgbọ okporo ígwè dị narị mita abụọ n'ogologo gafere otu àkwà mmiri dị narị mita atọ n'ogologo n'ime sekọnd iri anọ na ise. Gịnị bụ ọsọ nke ụgbọ okporo ígwè bụ? Nhọrọ: (A) 10 (B) 20 (C) 30 (D) 40 (E) 50 Ntụgharị uche site n'usoro: S = (200 + 300)/45 = 500/45 * 18/5 = 40 <eng> The question is: A train 200 meters long completely crosses a 300 meters long bridge in 45 seconds. What is the speed of the train is?
Options:
(A) 10
(B) 20
(C) 30
(D) 40
(E) 50
Step-by-step reasoning process: S = (200 + 300)/45 = 500/45 * 18/5 = 40
 