 
 <translate> Student: The speed of a boat in upstream is 60 kmph and the speed of the boat downstream is 80 kmph. Find the speed of the boat in still water and the speed of the stream?
Options:
(A) 70, 10 kmph
(B) 35, 27 kmph
(C) 50, 60 kmph
(D) 45, 55 kmph
(E) 45, 65 kmph.
Another student: Let's say, hmmm...
 <ibo> Nwa akwụkwọ: Ọsọ ụgbọ mmiri na-agba n'elu mmiri bụ 60 kmph na ọsọ nke ụgbọ mmiri na-agbadata bụ 80 kmph. Chọpụta ọsọ ụgbọ mmiri na mmiri na ọsọ iyi? Nhọrọ: (A) 70, 10 kmph (B) 35, 27 kmph (C) 50, 60 kmph (D) 45, 55 kmph (E) 45, 65 km kwa awa. Nwa akwụkwọ ọzọ: Ka anyị kwuo, hmmm... 