A man can row a boat at 20 kmph in still water. If the speed of the stream is 6 kmph, what is the time taken to row a distance of 60 km downstream? September 23, 2025 by Admin A. 20/6 hours B. 27/2 hours C. 30 hours D. 30/13 hours ✅ The correct answer is option D. 30/13 hours.