A boat can row 20 km downstream in 2 hours and return in two and half hours, then the speed of the stream is equal to
(A) 9 km/h
(B) 8 km/h
(C) 2 km/h
(D) 1 km/h
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TheGirlOnFire:
The answer is wrong. The correct answer is 1km/hr.
sorry
it's okay. Thank you for your efforts :)
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