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If a boat or a swimmer moves in the opposite direction of the stream then it is called upstream movement. In this case motion of boat or swimmer is opposed by the motion of stream. If a boat or a swimmer moves in the same direction of the stream then it is called downstream movement. In this case motion of boat or swimmer is supported by the motion of stream.

If Ratio of downstream and upstream speeds of a boat is a : b. If speed of the boat is double the speed of the stream, find the speed stream? Find his average speed for the whole journey, if the river is flowing with a speed of 1.

Find the distance. What would be the average speed of boat during the journey? Sign in. Log into your account. Password recovery. Forgot your password? Get help. IBPS Guide. Downstream: If a boat or a swimmer moves in the same direction of the stream then it is called downstream movement. When speed of boat or a swimmer is given then it normally means speed in still water.

Concepts and formulas of boats and streams are boat travel upstream and downstream problems in pdf applicable to problems involving:. Cyclist and wind: Cyclist analogous to boat and wind analogous to stream.

Example : 1 A man can row a boat to a certain distanced upstream in 4 hours and takes 3 hours to row downstream the same distance. Type 3: 3 Pavi rows in boat travel upstream and downstream problems in pdf water with a speed of 4.

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Upstream Speed of the man = (B - S) = (6 - 3) km/h = 3 km/h Time taken = tan 6 = 2 3 hours Dis ce Time Speed When upstream and downstream speed of boat or swimmer given. As mentioned in the previous two points, the downstream speed and upstream speed of boat or swimmer is (B + S) and (B - S) respectively. Speed of boat or swimmer in still water = 1 2File Size: KB. Time taken by boat to travel 30 km upstream = 30/ (x � 5) Time taken by boat to travel 50 km downstream = 50/ (x + 5) Since time taken by the boat in both cases is the same, => 30 (x + 5) = 50 (x -5) => 30 x + = 50x => 20x = => x = Thus the speed of the boat in still water is 20 km/h. Let us try to solve all the different kinds of examples of Boats and Streams in this section on Stream Boat Problems Practice Questions. Stream Boat Problems Practice Questions. Let us start by recalling some of the formulas for this section. Suppose the speed of a certain boat in still water is �u� km/hr and the speed of the stream is �v� km/hr, then: Speed of this boat downstream = (u + v) km/hr. Speed of this boat upstream .

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