200 hectare-meter of water is available from the reservoir and 275 hectare-meter of water is available from the reservoir for a small water resources utilization project (irrigation). It is desired to convey 100 hectare- meter to site, 200 hectare-meter to site, and 125 hectare-meter to site. Water can be conveyed from the reservoir for 7 ID, 11 ID, and 4 ID per hectare-meter to sites,, and respectively. The per hectare-meter cost of conveying water from the reservoir are 5 ID, 12 ID, and 8 ID to sites,, and respectively. It is desired to find the number of hectare-meter that should be conveyed from each reservoir to each site to minimize the total cost of conveyance of water. Set up the objective function, constraints relationship, and non-negatively conditions and solve the problem using A- simplex method