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2. A streamer goes downstream and covers the distance between two ports in three hours while it covers the same distance upstream in 4 hours. If the speed ofthe stream is 3km/hr, find the speed of the streamer in still water, |
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Answer» 18km/hrStep-by-step EXPLANATION:Let the STEAMER speed will be x.Downstream speed = (x+2)Distance between the points = 4(x+2) ---------- (1)Upstream speed = (x-2)Distance between the points = 5(x-2) ------------ (2)On solving (1) and (2), we get4(x+2) = 5(x - 2)4x + 8 = 5x - 10x = 18speed of the steamer in still water = 18 km/hr |
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