1. A fruit grower has two systems for picking crops. In the first system, the pickers work individ- ually and, because of their selectivity and care, this method yields more choice produce than regular produce. In the second system, four pickers work with a machine; while this method has a greater harvest, it yields less choice produce than regular produce and costs proportion- ately more due to the operating expense of the machine. The amounts of input and ouput for 1 hr of operation of each system are given in the following table: System 1 System 2 Worker-Hours Choice Produce(bu) Regular(bu) 1 4 2 4. 20 40 Cost ($) 2 11 Weekly the grower must supply a retail outlet with 480bu of choice produce and 800bu of regular produce. The grower has available 100 hr of labor per week. Determine an operating schedule that meets these demands and minimizes costs