A manufacturer of animal feed makes two grades of food. Each bagof high grade feed contains 10kg of wheat brand and 5kg of maize,while each bag of low-grade feed contains 12kg of wheat brand and3kg of maize. There are 1920kg of wheat brand and 780kg of maizecurrently available. The manufacture can make a profit of ¢12,000on each bag of high grade and ¢10000 on each bag of the low-gradefeed. Determine the number of bags of each grade to produce tomaximize profit.