Q1. A man can swim upstream at 8 km/hr and downstream at 12 km/hr. Find man's rate in still water.
Q2. A man can swim upstream at 6 km/hr & downstream at 10 km/hr. Find the rate of stream.
Q3. A boat can travel with a speed of 15 km/hr in still water. If the speed of the stream is 5 km/hr, find the taken time by the boat to go 60 km downstream.
Q8. boat can travel with a speed 17 km/hr in still water. If the speed of the stream is 5 km/hr, find the time taken by the boat to go 110 km downstream.
Q9. A boat can travel with a speed 21 km/hr in still water. If the speed of the stream is 3 km/hr, find the time taken by the boat to go 72 km downstream.
Q13. A man rows 2400 m in 300 seconds against the stream and returns in 3 minute 20 sec. Find the man’s rowing speed in still water in km/hr.
Q14.The speed of a boat in still water is 24 km/hr and the rate of current is 6 km/hr. Find the distance travelled downstream in 8 minute.
Q15.The speed of a boat in still water is 16 km/hr and the rate of current is 4 km/hr. In how much time the boat will travel 30 km downstream?
Q16.A boats man goes 5 km against the current of the stream in 45 minutes and goes 3 km along the current in 15 minutes. How long will it take to go 8 km in still water?
Q18.Speed of a boat in still water is 12 km/hr and the speed of the stream is 3 km/hr. A man rows to a place at a distance of 90 km and comes back to the starting point. Find the total time taken by him.
Q19.A man car row at 6 km/hr in still water. If the velocity of current is 2 km/hr and it takes him 1.5 hour to row to a place and come back, how far is the place?
Q20.A boat covers a certain distance downstream in 8 minutes, while it comes back in 12 minutes. If the speed of the stream be 2 km/hr, what is the speed of the boat in still water?