 
 <translate> Q: The speed of a boat in still water is 50kmph and the speed of the current is 20kmph. Find the speed and upstream?
Options:
(A) 30 kmph
(B) 40 kmph
(C) 78 kmph
(D) 15 kmph
(E) 23 kmph Let's give some random thoughts before answering. <ibo> Ajụjụ: Ọsọ ụgbọ mmiri na-agba n'ime mmiri dị jụụ bụ 50kmph na ọsọ nke mmiri na-agba bụ 20kmph. Chọta ọsọ na elu mmiri? Nhọrọ: (A) 30 kmph (B) 40 kmph (C) 78 kmph (D) 15 kmph (E) 23 kmph Ka anyị nye ụfọdụ echiche na-enweghị isi tupu ịza. 