...get b = 1 + c. Substituting b = c + 1 into eq. (1), 15 = (1 + c) + c = 1 + 2c => c = 7. So the still water boat speed is b = c + 1 = 8 mph and the current speed c = 7 mph.

3 Answers · Science & Mathematics · 29/03/2011

b = the rate of the boat in calm water c = the rate of the current (b+c) * 3 = 48 (b-c) * 4 = 48 b+c = 16 b-c = 12 add 2b = 28 b = 14 subtract 2c = 4 c = 2

1 Answers · Science & Mathematics · 03/11/2010

(distance) = (speed)(time) 30 km = (b + c)(3 hr) 10 = b + c [1] 30 km = (b - c)(7 hr) 30/7 = b - c [2] [1] - [2]: 10 - 30/7 = (b + c) - (b - c) 40/7 = 2c c = 20/7 km/h ≈ 2.86 km/h

1 Answers · Science & Mathematics · 25/09/2010

... B and put in the second equation: 14 - C = 20 + C - 2C = 6; C = -3 (minus, because it's against the boat speed). Take this in any expression of B, for example: B = 20...

3 Answers · Science & Mathematics · 09/08/2011

...the second equation: (C + 5) + C = 20 2C = 20 - 5 C = 15/2 C = 7.5 Use...7.5 = 5 B = 12.5 Therefore the boat in still water travels at 12.5 miles per...

1 Answers · Science & Mathematics · 19/02/2008

Let b = boat 's rate in still water and c = current's rate. 6(b - c) = 306 9(b + c) = 873 solve the system of equations: 6(b - c) = 306 b - c = 51 b = 51 + c 9(51 + c + c) = 873 51 + c + c = 97 2c = 46 c = 23 b = 51 + 23 = 74

5 Answers · Science & Mathematics · 07/08/2011

...gt;> 6S - 6C = 96 12S = 240 S = 20 2S + 2C = 48 ------>> S + C = 24, C = 4 d. Boat in still water: 20 mi/hr, Current: 4 mi/hr

3 Answers · Science & Mathematics · 03/01/2013

Let v be the speed of the boat , c be the speed of the current. Downstream (in the same direction...120 = 1/12 miles/min Summing both equations: 2c = 1/7 + 1/12 = 19/84 c = 19/168 miles/min = 0.113 ...

2 Answers · Science & Mathematics · 26/09/2010

http://en.wikipedia.org/wiki/Thousand_Islands#Popular_ boating . 2C _fishing_and_vacationing_locations of course you can go...

3 Answers · Travel · 28/06/2008

...cache?ei=UTF-8&p=Alfred+Mills% 2C +of+the+Nellie+Carter&y=Search...1906. I don't know if he was on the boat at that time. Here is the problem...

1 Answers · Travel · 24/04/2009