a steamer goes downstream and covers the distance between two ports in 3 hours while going upstream it covers the same distance in 4 hours. if the spe ed of the stream is 3 km/h. Find the speed of the steamer in still water.
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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 get
4(x+2) = 5(x - 2)
4x + 8 = 5x - 10
x = 18
speed of the steamer in still water = 18 km/hr
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