A farmer buys two varieties of animal feed. Type A contains 9 ounces of oats and 2 ounces of corn per pound. Type B contains 5 ounces of oats and 10 ounces of corn per pound. The farmer wants to combine the two feeds so that the resulting mixture has at least 100 pounds of oats and at least 70 pounds of corn. The farmer wants to buy not more than 375 pounds of Type A feed and not more than 212 pounds of Type B feed. Type A feed costs him 17 cents per pound, and Type B feed costs him 20 cents per pound. How many pounds of each type should the farmer buy to minimize the cost?