A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and back. What is the total distance traveled by the man?
Q1. A man can row 6 kmph in still water. When the river is running at 1.2 kmph, it takes him 1 hour to row to a place and back. What is the total distance traveled by the man?
Answer: 5.76 km
Explanation: Downstream speed = 7.2 km/h, upstream = 4.8 km/h; solving d/7.2 + d/4.8 = 1 gives d = 2.88 km, so the total round-trip distance is 5.76 km.