On a 80-hectare farm, a farmer can grow rice and corn. In comparison to corn, which needs 6 pesticide units and 12 fertilizer units per hectare, rice only needs 8 insecticide units and 4 fertilizer units. He has at least 240 units of fertilizer and at least 180 units of insecticide on hand. He makes Php 30,000.00 on average per hectare of rice and Php 20,000.00 on each hectare of corn. In order to increase his average profit, how many hectares of each crop should he plant?
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