 
 <translate> Use some thinking to answer the following question. If sushi rows 27 km upstream and 81 km down steam taking 9 hours each, then the speed of the stream
Options:
(A) 12 kmph
(B) 13 kmph
(C) 22 kmph
(D) 20 kmph
(E) 15 kmph <ibo> Chebara ajụjụ na-esonụ echiche. Ọ bụrụ na sushi na-agba kilomita iri abụọ na asaa na kilomita iri asatọ na otu na-agbadata mmiri na-ewe awa itoolu nke ọ bụla, mgbe ahụ ọsọ nke iyi ahụ Nhọrọ: (A) 12 kmph (B) 13 kmph (C) 22 kmph (D) 20 kmph (E) 15 kmph 