Boats And Stream
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Avg score: 14% • Most missed: “If the ratio of speed of a speedboat and river is in the artio of 36:”
Boats And Stream
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25 Questions

1. Suraj can row 40km upstream and 55km downstream in 13 hours and he can row 30km upstream and 44km downstream in 10 hours.find his speed in still water.
2. Laxman can row 7 ½ km/hr in still water. If a river flowing at 1.5 km/hr an hour,it takes him 50 minutes to row to a place and back, what is the distance of place?
3. Abhishek can swim 6 km/hr in still water. But he takes double time to return. Find the speed of current.
4. A boat running downstream covers a distance of 30 kms in 2 hrs. While returning the boat takes 6 hrs. If the speed of the current is half that of the boat, what is the speed of the boat?
5. Rahul takes 3 hours 45 minutes to row a boat 15 km downstream of a river and 2hours 30 minutes to cover a distance of 5km upstream. find the speed of theriver current in km/hr.
6. Chandan swims downstream 28 km in 4 hrs and upstream 12 km in 3 hrs. Find his speed in still water and also the speed of the current.
7. A ball is projected vertically up-wards reaches, at the end of 'tt' seconds, an elevation of 's' feet where s=160t−16t2. The highest elevation is
8. Tripti can swim in still water is at 12km/hr. She takes 6 hrs to swim to a certain distance and return to the starting point. The speed of current is 4km/hr. Find the distance between the two points.
9. There is a road along with a river. Uttam and Vikrant started from a place A,moved to a goes to some distance at point B and then returned to A again. Uttam moves on a cycle at a speed of 12 km/hr,while Vikrant travels on a boat at a speed of 10 km/hr. If the speed of curent is 4 km/hr, who will return to placeA faster?
10. Speed of boat in still water is 16 km/hr. If the speed of the stream is 4 km/hr, find its downstream and upstream speeds.
11. A motorboat whose speed is 15 km/hr in still water goes 30km downstream and comes back in four and a half hours. The speed of the stream is:
12. A boat travels 32 km upstream and 60 km downstream in 9 hr. Also it travels 40 km upstream and 84 km downstream in 12 hrs. Find the speed of the boat in still water and rate of the current.
13. A boat covers a certain distance downstream in 6 hours and takes 8 hours to return upstream to the starting point. If the speed of the stream is 3 km/hr, find the speed of the boat in still water.
14. The speed of the boat in still water is 15 km/hr. If it takes twice as long as to go upstream to a point as to return downstream to the starting point. What is the speed of the current?
15. The current of a stream keeps running at 4km 60 minutes. A boat goes 6 km and back to the beginning stage in 2hour. The rate of the boat in still water is:
16. A fisher man can row at 2km against the stream in 20 min. And he takes 15min while travelling along with stream . What is the rate of the current?
17. Rakesh can travel 8km/hr in still water. When water is flowing at 2km/hr it takes him 3hrs 12min to move to and fro. Where far he travelled?
18. Abhilash can row upstream at 7 km/hr and downstream at 10 km/hr.find man’s rate in still water and the rate of current.
19. A boat is paddled downstream at 15.5km/hr and upstream at 8.5km/hr. The rate of the stream is:
20. If the ratio of speed of a speedboat and river is in the artio of 36:5. If it travels upto a distance in 5 hours 10min. Then in what time will return from same distance.
21. A boatman rows to a place 45 km distant and back in 20 hour. He finds that he can row 12 km with the stream in the same time as 4 km against the stream. Find the speed of the stream.
22. A boat goes from A to B 4 hours. And retrurns to A in 5 hours. If the speed of the stream is 2km/hr, Find the distance between two points.
23. In a waterway, a man takes 3 hours in paddling 3 km upstream or 15km downstream. What is the rate of the current?
24. In a stream running at 2 km/hr,a motar boat goes 6km upstream and back again to the starting point in 33 minutes.find the speed of the motarboat in still water.
25. The speed Hooghly river is 5 km/hr. A boat travels 28 km upstream and then returns downstream to the starting point. If its speed in still water be 9 km/hr, find the total journey time.

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