Solving Rate Problems: Boat Speed, Wind Speed, and Tank Filling

Preview 2 of 3 pages

See the first 2 pages exactly as they appear in the document.

Page 1
Read page 1 as text
Solving Rate Problems: Boat Speed, Wind Speed, and Tank Filling Section 6.8: Exercises 36, 54, 64 36). Upstream downstream. Junior’s boat will go 15 miles per hour in still water. If he can go 12 miles downstream in the same amount of time as it takes to go 9 miles upstream, hen what is the speed of the current? Speed of current = x mph Speed when downstream = (15+x)mph Speed when upstream = (15 - x)mph speed ce dis time tan  Distance Now according to the question both time are same so 143 . 2 7 15 21 45 45 21 135 180 12 9 12 180 9 135 ) 15 ( 12 15 ( 9 15 12 15 9                 x x x x x x x x x x x x The speed of the current will be 2.143 mph #54). Big Plane. A six passenger plane cruises at 180 mph in calm air. If the plane flies 7 miles with the win in the same amount of time as it flies 5 miles against the wind, then what is the wind speed? Speed of wind = x mph Speed of plane in the direction of wind = (180 +x) mph Speed against direction = (180 - x) mph
Page 2

1 more page in the full document

Unlock it once and it stays in your library, ready to chat with or turn into flashcards.