A farmer wishes to build a fence for 6 adjacent rectangular pens. If there is 600 feet of fencing available, what are the dimensions of each pen that maximizes total pen area?
The image looks like this:
box box box
box box box
also:
If the interior fencing is $3.00 per foot and the perimeter fence is $5.00 per foot, what are the pen dimensions that minimize cost? Assume that each pen encloses 200 square feet of area.
I get 8x+9y=600
ultimately I get x=150
Does anyone get anything different?