SOLUTION: can someone please help me i have no idea how to solve this...thank very much...if you could help me...sect. 10.3 # 48 Construction. A garden area is 30 ft long and 20 ft wide.

Algebra ->  Length-and-distance -> SOLUTION: can someone please help me i have no idea how to solve this...thank very much...if you could help me...sect. 10.3 # 48 Construction. A garden area is 30 ft long and 20 ft wide.       Log On


   

Question 73882: can someone please help me i have no idea how to solve this...thank very much...if you could help me...sect. 10.3 # 48
Construction. A garden area is 30 ft long and 20 ft wide. A path of uniform width is set around the edge. If the remaining garden area is 400 ft^2, what is the width of the path?
Answer by nilan(17) About Me  (Show Source):
You can put this solution on YOUR website!
let x is the width of the path
then
600-%2830%2Ax%2A2%2B%2820-2%2Ax%29x%2A2%29=+400
we can siplify this as
%0D%0Ax%5E2-25%2Ax%2B50+=+0
then
x+=+%2B-sqrt%28425%2F4%29%2B25%2F2