 
<translate> Ka ba da rafi na sani sannan ka ba da amsa ta ƙarshe. Mutum na iya tuka jirgin ruwa a kilomita 10 a kowace sa'a a cikin ruwa mai nutsuwa kuma saurin rafin shine kilomita 8 a kowace awa. To, nawa ne lokacin da za a dauka don yin tafiya mai nisan kilomita 90 a cikin rafin? Zaɓuɓɓuka: (A) 8hrs (B) Awanni 5 (C) Awanni 15 (D) Awanni 15 (E) Awanni 20 <eng> Give stream of consciousness and then the final answer. A man can row a boat at 10 kmph in still water and the speed of the stream is 8 kmph. What is then time taken to row a distance of 90 km down the stream ?
Options:
(A) 8hrs
(B) 5 hrs
(C) 15 hrs
(D) 15 hrs
(E) 20 hrs 