 
<translate> Ajụjụ: Otu nwoke na-eji ụgbọ mmiri ya akwọ ụgbọ mmiri ruo kilomita iri asatọ na ise ka mmiri ahụ na-asọda, na-agakwa kilomita iri anọ na ise ka mmiri ahụ na-asọda, na-eji awa abụọ na ọkara akwọ ụgbọ mmiri ahụ. Chọta ọsọ nke iyi ahụ? Nhọrọ: (A) 1 kmph (B) 6 kmph (C) 5 kmph (D) 8 kmph (E) 7 kmph Ka anyị buru ụzọ chee echiche. Ụfọdụ echiche na-enweghị isi: <eng> Question: A man rows his boat 85 km downstream and 45 km upstream, taking 2 1/2 hours each time. Find the speed of the stream?
Options:
(A) 1 kmph
(B) 6 kmph
(C) 5 kmph
(D) 8 kmph
(E) 7 kmph Let's think first. Some random reasoning: 