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upstream speed of boat =40km/hr. Speed in still water=55Km/hr. So, Speed of stream ==15Km/hr. Hence,Downstream speed = =[Speed of Boat in still water]+[Speed of Stream] =55+15 =70Km/hr. Hope it helps Regards; Leukonov/Olegion. The net speed of the boat in this case is called upstream speed. Let the speed of the boat in still water Speed Of The Boat Upstream And Downstream Recipe is 'b' km/hr and the speed of the stream is 'w' km/hr. When the boat goes downstream then the speed will be (b + w) km/hr as in this case the water will take the boat along with it. Let the boat speed be x andthe stream speed be yGiven that the taken for the boat to go 24 km upstream and 28 km downstream is 6 hrswe know that time = speeddistance Therefore, time taken for the to go upstream is x?y24 andtime taken for the to go downstream is x+y28 Hence, x?y24 + x+y28 = 6 (1)Given that the taken for the boat to go 30 km upstream and 21 km downstream is hrsTherefore, time taken for the to go upstream . 23:29:

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A man rows a certain distance downstream in X hours and returns the same distance in Y hours. Easy Normal Medium Hard Expert. Example 1: A boat travels equal distance upstream and downstream. Article Contributed By :. A - 15,5 B - 20,12 C - 10,6 D - 18,

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