Posted by Christie on .
A pig farmer wants to enclose a rectangular area and then divide it into six pens with fencing parallel to one side of the rectangle (see the figure below). There are 610 feet of fencing available to complete the job. What is the largest possible total area of the six pens?

Calculus 
Steve,
Check the problems solved in the related links. Change a couple of numbers, and you'll have your solution.