 
<translate> Tambaya: Saurin jirgin ruwa a cikin ruwa mai nutsuwa shine kilomita 50 a kowace awa kuma saurin rafi shine kilomita 20 a kowace awa. Gano gudun da kuma sama? Zaɓuɓɓuka: (A) 30 km a kowace awa (B) 40 km a kowace awa (C) 78 km a kowace awa (D) 15 km a kowace awa (E) 23 km / h Bari mu ba da wasu tunani na bazuwar kafin amsawa. <eng> 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. 