Answers Problems on Boats and Streams(Set 2) - Solved Examples 31. If a man's rate with the current is 15 km/hr and the rate of the current is 1 1 ⁄ 2 km/hr, then his rate against the current is A. 12 km/hr B. 10 km/hr C. 10.5 km/hr D. 12.5 km/hr View Answer | Notebook | Discuss 32. The speed of the boat in still water in 12 kmph. It can travel downstream through 45 kms in 3 hrs. In what time would it cover the same distance upstream? A. 8 hours B. 6 hours C. 4 hours D. 5 hours View Answer | Notebook | Discuss 33. A boat goes 8 km upstream in 24 minutes. The speed of stream is 4 km/hr. The speed of boat in still water is: A. 25 km/hr B. 26 km/hr C. 22 km/hr D. 24 km/hr View Answer | Notebook | Discuss 34. The speed of a boat in still water is 25 kmph. If it can travel 10 km upstream in 1 hr, what time it would take to travel the same distance downstream? A. 22 minutes B. 30 minutes C. 40 minutes D. 15 minutes ...