A man rows upstream at 4 km/h and downstream at 6 km/h. What is the speed of the current?
Q1. A man rows upstream at 4 km/h and downstream at 6 km/h. What is the speed of the current?
Answer: 1 km/h
Explanation: Speed of the current = (downstream speed - upstream speed)/2 = (6 - 4)/2 = 1 km/h.