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

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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.
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