Top 100 Boat and Stream Problems
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A boat can travel with a speed of 13 km/hr in still water. If the speed of the stream is 4 km/hr, find the time taken by the boat to go 68 km downstream.
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A man's speed with the current is 15 km/hr and the speed of the current is 2.5 km/hr. The man's speed against the current is:
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If a boat travels with a speed of 10 km/hr in still water and the speed of stream is 5 km/hr, what would be the time taken by boat to go 60 km downstream?
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A boat running upstream takes 8 hours 48 minutes to cover a certain distance, while it takes 4 hours to cover the same distance running downstream. What is the ratio between the speed of the boat and speed of the water current respectively?
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A man rows a boat at 8 km upstream in 2 hours and 2 km downstream in 40 minutes. How long will he take to reach 7 km in still water?
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A motorboat, whose speed in 15 km/hr in still water goes 30 km downstream and comes back in a total of 4 hours 30 minutes. The speed of the stream (in km/hr) is:
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The speed of swimmer along with the flow of river is 40 km/hr and against the flow of river is 22 km/hr. What would be the speed of swimmer in still water?
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In one hour, a boat goes 11 km/hr along the stream and 5 km/hr against the stream. The speed of the boat in still water (in km/hr) is:
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For a motorboat that covers a certain distance downstream in 2 hours & returns in 3 hours, what would be its speed in still water if the speed of stream is 6 km/hr?
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If the speed of boat in still water is 10 km/hr & the speed of stream is 3 km/hr, the boat rows to a place which is 50 km far & returns through the same path. What would be the average speed of boat during the journey?
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The speed of a boat when travelling downstream is 32 km/h, whereas when travelling upstream it is 28 km/h. What is the speed of the boat in still water?
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The speed of a current is 5 km/hr and a man's speed against the current is 18 km/hr. So the man's speed with the current is ?
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A boat is rowed downstream at 16.5 km/hr and upstream at 9.5 km/hr. The speed of the stream is
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A man can row 8 km/h in still water. When the river is running at 2 km/h, it takes him 4 hours to row to a place and back. How far is the place ?
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A man can row 6½ kms an hour in still water and he finds that it takes him twice as long to row down the river. The rate of the stream is
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A boat goes 30 km downstream and 24 km upstream in 6 hours. It goes 39 km upstream and 26 km downstream in 6 hour 30 minutes. The speed of the boat in still water is
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A fisher man can row 4 km against the stream in 40 minutes and return in 30 minutes. What is the speed of the current ?
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A boatman goes 2 km against the current of stream in 30 minutes and return to the same spot in 20 minutes. What is his rate of rowing in still water ?
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The current of a stream runs at 4 km an hour. A boat goes 6 km and back to the starting point in 2 hours. The speed of the boat in still water is
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A boat can travel 15 km/ hr in still water. If the speed of the the stream is 3 km/hr, then what will be the time taken by the boat to travel 72 km in downstream direction ?
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A boat can travel with a speed of 9 km/hr in still water. If the speed of the stream is 3 km/hr, then what time will be taken by boat to travel 60 km in downstream direction ?
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A boatman goes 3km against the current of stream in 1hr and goes 2km along the current in 20 minutes. How long will he take to go 6km in stationary water
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A man rows 42 km down stream in 7 hours and 15 km upstream in 5 hours. What is the velocity of the current ?
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A man can row upstream at 5 km/hr and downstream at 10 km/hr. Find the man's rate in still water.
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A boat covers a distance of 30 km in 2½ hrs running downstream. While returning it covers the same distance in 3¾ hrs. What is the speed of the boat in still water.
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A man can row three quaters of a kilometer against the stream in 11¼ minutes and return in 7½ minutes. The speed of the man in still water
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The speed of a boat in still water is 14 km/h. It can go 30 km upstream and return downstream to the original point in 5 hour. The speed of the stream is
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A steamer goes downstream from one port to another in 4 hours. It covers the same distance upstream in 5 hours. If the speed of the stream is 2 km/h, the distance between the two ports is
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The speed of a boat in still water is 10 km/hr. If it can travel 26 km downstream and 14 km upstream in the same time, the speed of the stream is
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A man can row upstream at 10 km/hr and downstream at 16 km/hr. The speed of the stream is ?
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A boat takes 90 minutes less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is
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A man rows 40 km downstream and 22 km upstream taking 5 hours each time. What is the velocity of the current ?
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The speed of a motor boat is that of the current of water as 36:4. The boat goes along with the current in 4 hours 30 minutes. It will come back in
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A boat running upstream takes 7 hours 48 minutes to cover a certain distance while it takes 4 hours to cover the same distance running downstream. What is the ratio between speed of the boat and the speed of water current respectively ?
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A boat goes 20 km downstream in 10 hours, It takes 2 hours more to cover the same distance against the stream. What is the speed of the boat in still water ?
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A boat can covers a distance of 12 km in 4 hours in downstream direction, while the same distance covers in 6 hours in upstream direction. What is the speed of the boat in still water ?
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A boat is rowed downstream at 15.5 km/h and upstream at 8 km/h. The speed of the stream is
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A man can row at 4 km/h in still water. If the river is running at 2 km/h, it takes him 70 minutes to row to a place and back. How far is the place ?
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A boat goes 9 km in an hour in still water. It takes thrice as much time in covering the same distance against the current. Speed of the current is
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A boat running downstream covers 24 km in 4 hr, while for covering the same distance upstream it takes 6 hours. What is the speed of the boat in still water ?
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A boat takes one fourth time in moving a certain distance downstream than upstream. What is the ratio between rate in still water and rate of current ?
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A man swimming in a stream which flows 1(1/2) km/hr finds that in a given time he can swim twice as far with the stream as he can against it. At what rate dose he swim?
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A and B in boat B1 challenge C and D in boat B2 in a race of 50 km. A and B take turns to row the stretches of 6 km and A begins. C and D take turns to row an hour and C begins. A and C can each row 5 km/hr, B and D each can row only 5(1/2) km/hr. Which boat wins and by what time?
- A. B1 wins by 2 mins
- B. B2 wins by 1(7/11) mins Correct Answer
- C. Both reach the finishing spot together
- D. B1 wins by 5(4/11)
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A motorboat went the river for 14 km and then up the river for 9 km. It took a total of 5 hrs the entire journey. Find the speed of the river flow if the speed of the boat in still water is 5 km/hr.
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A boat takes 5 hrs more while going back in upstream than in downstream. If the distance between two places is 24 km and the speed of boat in still water so that if can row downstream, 24 km in 4 hrs?
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A boat takes 90 mins less to travel 36 miles downstream than to travel the same distance upstream. If the speed of the boat in still water is 10 mph, the speed of the stream is
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At his usual rowing rate, Rahul can travel 12 miles downstream in a certain river in 6 hrs less than it takes him to travel the same distance upstream. But if he could double his usual rowing rate for this 24mile round trip, the downstream 12 miles would then take only one hour less than the upstream 12 miles. What is the speed of the current in miles per hour?
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P, Q, R are three towns on a river which flows uniformly. Q is equidistant from P and R. A man rows from P to Q and back in 10 hrs. He can row from P to R in 4 hrs. The ratio of speed of man in still water to the speed of the current is
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A man can row three-quarters of kilometre against the stream in 11(1/4) mins and returns in 7(1/2) mins. The speed of the man in still water is
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A person can row with the stream at 8 km per hour and against the stream at 6 km an hour. The speed of the current is
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A boat sails 15 km of river towards upstream in 5 hrs. How long will it take to cover the same distance downstream, if the speed of current is one-fourth the speed of the boat in still water
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The current of the stream is 1 km/hr. A boat goes 35 km upstream and back to the starting point in 12 hrs. The speed of the motorboat in still water is
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A boat, while going downstream in a river covered a distance of 50 miles at an average speed of 60 miles per hour. While returning because of the water resistance, it took 1 hr 15 mins to cover the same distance. What was the average speed during the whole journey?
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Two boats, travelling at 5 and 10 km/hr, head directly towards each other. They begin at a distance of 20 km from each other. How far apart are they (in kms) one minute before they collide?
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A boatman goes 2 km against the current of the stream in 1 hr and goes 1 km along the current in 10 mins. How long will he take to go 5 km in stationary water?
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A boat goes 24 km upstream and 28 km downstream in 6 hrs. If it goes 30 km upstream and 21 km downstream in 6 hrs and 30 mins, find the speed of the steam.
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In a stream that is running at 2 km/hr, a man goes 10 km upstream and comes back to the starting point in 55 mins. Find the speed of the man in still water.
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The different between downstream speed and upstream speed is 3 km/hr and the total time taken during upstream and downstream is 3 hrs. What is the downstream speed, if the downstream and upstream distance are 3 km each?
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A man can row 30 km upstream and 44 km downstream in 10 hrs. It is also known that he can row 40 km upstream and 55 km downstream in 13 hrs. Find the speed of the man in still water.
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Speed of a speed boat when moving in the direction perpendicular to the direction of the current is 16 km/hr, speed of the current is 3 km/hr. So the speed of the boat against the current will be (in km/h)
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A man can row 30 km upstream and 44 km downstream in 10 hrs. Also, he can row 40 km upstream and 55 km downstream in 13 hrs. Find the rate of the current and the speed of the man in still water.
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