SOLUTION: Solve. A garden area is 30 feet long and 20 feet wide. A path of uniform width is set around the edge. If the remaining garden area is 400 feet squared, what is the width of the

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Question 121880: Solve.
A garden area is 30 feet long and 20 feet wide. A path of uniform width is set around the edge. If the remaining garden area is 400 feet squared, what is the width of the path?''.
Answer by scott8148(6628) About Me  (Show Source):
You can put this solution on YOUR website!
let x="width of path" __ (30-2x)(20-2x)=400 __ 600-100x+4x^2=400

x^2-25x+50=0

use quadratic formula to find x