SOLUTION: Jack starts at a 20320 summit and walks downhill at a rate of 4 feet per second. Jill starts at the bottom of the mountain and walks uphill at a rate of 1 foot per second. At wha

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Question 267565: Jack starts at a 20320 summit and walks downhill at a rate of 4 feet per second. Jill starts at the bottom of the mountain and walks uphill at a rate of 1 foot per second. At what elevation will they meet?
Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
The Jack equation is
20320+-+4x
The Jill equation is
0%2B+1x
---set them equal as
1x+=+20320+-+4x
add 4x to both sides to get
5x+=+20320
divide by 5 to get
x+=+4064 seconds
They meet at
4064 feet