SOLUTION: The width of pj's swimming pool is 8 yards less than its length.If the area of the pool is 200 yards, what are its lenght and width.

Click here to see ALL problems on Inverses

Question 279933: The width of pj's swimming pool is 8 yards less than its length.If the area of the pool is 200 yards, what are its lenght and width.

Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website!
The width of pj's swimming pool is 8 yards less than its length.If the area of the pool is 200 yards, what are its lenght and width.
---------------------------
width = length -8
area = length*width = 200 yds.
-------------------------------------
Equation:
200 = L(L-8)
200 = L^2-8L
L^2-8L-200 = 0
L = [8 +- sqrt(64 -4*-200)]/2
---
L = [8 +- sqrt(864)]/2
L = [8 +-2sqrt(216)]/2
L = [4 +- sqrt(216)]
Positive Result:
L = [4+sqrt(216)] (length
--------------
W = length -8 = 10.7 (width)
===============================
Cheers,
Stan H.