 
 <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...
 <hau> Dalibi: Saurin jirgin ruwa a sama yana da kilomita 60 a kowace awa kuma saurin jirgin ruwan da ke ƙasa yana da kilomita 80 a kowace awa. Nemo saurin jirgin ruwa a cikin ruwa mai nutsuwa da saurin rafi? Zaɓuɓɓuka: (A) 70, 10 kilomita a kowace awa (B) 35, 27 kilomita a kowace awa (C) 50, 60 kilomita a kowace awa (D) 45, 55 kilomita a kowace awa (E) 45, 65 kilomita a kowace awa. Wani ɗalibi: Bari mu ce, hmmm... 