Margaret Young's family owns five parcels of farm land, broken into a southeast sector, a north sector, a northwest sector, a west sector, and a southwest sector. Young is involved primarily in growing wheat, alfalfa and barley crops and is currently prep a ring her pro duction plan for next year. The Pennsylvania Water Authority has just announced its yeary water allot ment, with the Young farm receiving 7,400 acre-feet Each parcel can only tolerate a certain amount of irrigation per growing season, as specified in the following table