myamazingparrop2w764 myamazingparrop2w764
  • 21-01-2018
  • Mathematics
contestada

dan and cheryl paddled their canoe 40 mi in 5 hr with the current and 16 mi in 8 hr against the current. Find the speed of the current and the speed of the canoe in still water

Respuesta :

nobillionaireNobley
nobillionaireNobley nobillionaireNobley
  • 30-01-2018
Let the speed of the current be x and the speed of the canoe in still water be y, then

[tex]y+x= \frac{40}{5} =8 \\ y-x= \frac{16}{8} =2[/tex]

Adding the two equations, we have:

[tex]2y=10 \\ \\ \Rightarrow y=5[/tex]

From any of the equations, we have that x = 2

Therefore, the speed of the current is 2 miles per hour while the speed of the canoe in still water is 5 miles per hour.
Answer Link

Otras preguntas

What are the last two-?
Select the correct answer from each drop-down menu. Simplify the given polynomial and use it to complete the statement. (8x^2 - 5x - 7) - (9x^2 - 3x - 5) + (x +
If 5 moles of nitrogen are used how many moles NH3(g) are produced
When did the presidency of JFK end
Evaluate - 4x^(3)-2x^(2)-3x+1 given x = -2
Which of the following statements about the greenhouse effect is accurate?
From the Muslims point of view, why were the Crusades unnecessary?
Having good study habits will help you learn more. TrueFalse
Terry uses a ladder that is 12 feet tall. To be safe the ladder must make an angle of elevation of between 70-85 degrees to be safe. If he places the ladder 3 f
What did Andrew Jackson believe could grow larger than the average consumer/citizen?