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Let the speed of a boat in still water be u km/hr and the speed of the stream be v km/hr, then Speed downstream = (u + v) km/hr Speed upstream = (u - v) km/hr. 4. 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 2 (Downstream speed + Upstream speed) = (B + S + B - S) = BFile Size: KB. ? b = (d+u) / 2 which gives the speed of the boat in terms of downstream and upstream speed. Subtracting the equation (i) and (ii), we get d � u = 2w ? w = (d-u) / 2 which gives the speed of the stream in terms of downstream and upstream speed. You should remember these boats and streams formulas. Must Read Boat and Streams Articles. Derivation of formula 8 (boats and streams). Let the speed of a man in still water = $x$ km/hr speed of the stream = $y$ km/hr. Assume he travels a distance $d$ km upstream and come back the same distance downstream, and total time taken Boat Traveling Upstream And Downstream Use = $t$ hours. Speed downstream $=(x+y)$ Speed upstream $=(x-y)$. Time taken to travel upstream $=\dfrac{d}{x-y}$ Time taken to travel downstream $=\dfrac{d}{x+y}$. Total time $=t$ $\dfrac{d}{x-y}+\dfrac{d}{x+y}=t\\ d(x+y)+d(x-y)=t(x+y)(x-y)\\ 2dx=t(x+y)(x-y)\\ 2dx=t(x^2-y^2)\\ d=\dfrac{t(x^2-y^2). }{2x}$. Boats and Streams Formula pages has all the conceptual Formulas for Boats and Streams. Speed downstream = (u + v) km/hr Speed upstream = (u � v) km/hr.� Boats and streams is one of the most common topics in quantitative section of all the job entrance myboat303 boatplans is also included in Aptitude section of many job test in companies like TCS, Infosys etc. This a very simple topic and require to direct application of Boat Upstream And Downstream Formula Version Formulas to solve the question. Formulas for Boats and Streams Questions with Basic Concepts. 1. What is Downstream: It is related to the direction of water flow in respect with the object, when the object or body is flowing in direction of stream it is called as Downstream. In a stream flowing at v km/hr if it takes him t hrs to row to a place and come back, then the distance between the two places is. A boat or a swimmer takes n times as long as to row upstream as to row downstream the river. If the speed of the boat or the swimmer is u km/hr in still water and speed of stream is v km/hr, then. Most Popular Articles. Time and Work Concepts. Time and Work Formula and Solved Problems.
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