I need help with this math question:
A farmer with 720 ft of fencing wants to enclose a rectangular area and then divide it into four pens with fencing parallel to one side of the rectangle. What is the largest possible total area of the four pens.
This is what I have attempted so far.
Perimeter = 2*L + 5*W = 720
Solve for W W = 144 - 2/5*L
Area of each pen = L/4*W Plug in W Area = L/4*144 - L/4*2/5*L or is it [Length/4*144 -Lenght/4*2/5lenght)
I have a feeling I am attempting this question incorrectly..