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  1. Let the speed of the boat in still water be s km/hr. and that of stream = s' km/hr. Therefore effective speed of the boat downwards = (s+s') km/hr And that in upstream = (s - s') km/hr We know that Time taken during any travel = Distance/speed...

    3 Answers · Education & Reference · 22/03/2008

  2. Let: x = rate of the current y = rate of the boat (in still water) Since we are given that the distance upstream is 30 miles and the boat takes 5/2 hours to do so, we see that the rate upstream is 30/(5/2) = 12 mph. Since it takes 2...

    1 Answers · Education & Reference · 06/03/2010

  3. ok. so. 30 / 3 = 10m/h 30 / 5 = 6m/h (10+6) / 2 = 8m/h (average boat speed in still water) 10 - 8 and 8 - 6 both = 2m/h (river current speed)

    4 Answers · Education & Reference · 23/09/2009

  4. ... paddle wheeler, the Clermont, made the trip on the Hudson River from New...western rivers. Although rafts and riverboats continued to carry bulky agricultural products...

    2 Answers · Education & Reference · 22/02/2010

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