A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 May 25, 2022 by admin โช Choose the correct option.A man can row 50 km upstream and 72 km downstream in 9 hours. He can also row 70 km upstream and 90 km downstream in 12 hours. Find the rate of current.A. 14 km/hr.B. 4 km/hr.C. 4 3/4 km/hr.D. 4 1/2 km/hr. Submit Answer