7. The speed of a boat in still water is 27 kmph. It covers a distance of 85
km. in 4 hrs. 15 minutes in upstream. The speed of stream is--
(A) 6 kmph.
(B) 7 kmph.
(C) 8 kmph.
(D) 9 kmph.
Answers
Answered by
0
Answer:
which class???????????####*'hahaj
Step-by-step explanation:
idkhdhsji
plz tell class
Answered by
0
Step-by-step explanation:
speed of boat = 27 km/hr
speed of upstream = 4 hour + 15 min
= 4+1/4 = 17/4 hours
= 85×4/17
= 20 km/hr
speed of stream = 27km/hr - 20 km/hr
= 7 km/hr
Option B is correct
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