A man can row 12 km downstream in 3 hours and the same distance upstream in 4 hours. What is the speed of the current?
Q1. A man can row 12 km downstream in 3 hours and the same distance upstream in 4 hours. What is the speed of the current?
Answer: 0.5 km/h
Explanation: Downstream speed = 12/3 = 4 km/h; upstream = 12/4 = 3 km/h; current speed = (4−3)/2 = 0.5 km/h.