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related to: boats%2C+boats

1. ### Word Problem?

...24 Subtracting both sides of equation (1) from that of equation (2) 2C = 1/3 - 1/4 = 1/12 or C = 1/24 Thus the rate of the boat in still water and the rate of the current are 7/24 km/min i.e. 17.5 kmph and...

2 Answers · Education & Reference · 11/12/2007

2. ### Can you help me with this physics problem?

b=speed of boat c=speed of current (b+c)2=60 (b-c)3=60 b+c=30 b= 30-c (30-c-c)3=60 30- 2c =20 - 2c =-10 c= 5m/s (b+5)2=60 b+5=30 b= 25m/s More info: 25m/s is the resultant speed of the boat .

1 Answers · Science & Mathematics · 11/01/2007

3. ### Easy algebra 1 math problem?

...: 10b + 10b - 10c + 10c = 40 + 200 20b = 240 b = 12 mph 2(12) + 2c = 40 2c = 40-24 = 16 c = 8 Speed of current c = 8 mph Speed of boat b = 12 mph

5 Answers · Science & Mathematics · 24/04/2011

4. ### Calculus - Related rates problem?

...north-bound boat B = distance travelled by the west-bound boat Differentiating the above, 2C (dC/dt) = 2A(dA/dt) + 2B(dB/dt) Modifying...

3 Answers · Science & Mathematics · 21/12/2008

5. ### Problem Solving help please!?

...current = c Speed of boat with current = x + c = 24/3 = 8 Speed of boat against current = x - c = 16/4 = 4 So x + c = 8 [eqn 1] x - c = 4 [eqn 2] [eqn 1] - [eqn 2] → 2c = 4 c = 2 Subs c = 2 into [eqn 1] → x + 2 = 8 x = 6 So rate...

1 Answers · Education & Reference · 19/11/2009

6. ### Algebra speed problem?

Let b = boat 's speed in still water and c = current's speed downstream. distance = time...upstream, 42 = 7(b - c) solve the system of equations: 20 = 2b + 2c 10 = b + c 10 - c = b substitute into the other equation: 42 = 7(10 - c - c...

1 Answers · Science & Mathematics · 21/06/2011

7. ### Help with a word problem?

b = boat speed c = current speed b + c = 48mi/3hr = 16mi/hr b - c = 48mi/4hr = 12mi/hr...and substitute that into the first equation. b = 12 + c 12 + c + c = 16 2c = 4 c = 2 mi/hr Plug this value into either equation and solve for b...

3 Answers · Science & Mathematics · 13/04/2013

8. ### How to solve Wind and Current Math Puzzle?

...45/2.5 = 18 mph On the return trip, the speed of the boat - speed of the current = 45/2.75 = 16 1/2.75 mph (~ 16.3636...the first equation: b + c = 18 (16.3636 + c) + c = 18 2c = 18 - 16.3636 2c = 1.6364 c = 0.818 mph = Speed...

2 Answers · Education & Reference · 09/02/2012

9. ### Math Question?

... boat 's total speed is b + c. On the upstream journey, the boat 's total speed is b - c. Using the formula, ... the 2nd from the 1st gives : 2c = 5, so c = 2.5 mph.

4 Answers · Science & Mathematics · 11/12/2006

10. ### a boat travel 210m downstream & back.trip downstream took 10h.trip upstream took 70h.find speed of boat &curent

downstream speed b+c, upstream b-c, so (b+c)10 = 210 (b-c)70 = 210 b+c = 21 b-c = 3 -------------- add 2b = 24 b = 12 mph b+c = 21 b-c = 3 -------------- subtract 2c = 18 c = 9 mph

1 Answers · Science & Mathematics · 14/03/2008