(5 points) A feed company produces two types of horse feed, one a general type, and one for senior horses. The general type requires 1 hour for processing, 1 hour for mixing, and 1 hour for packaging. The senior type requires 5 hours for processing grains, 3 hours for mixing, and 2 hours for packaging. The available hours for each are: 70 hours for processing, 50 hours for mixing, and 80 hours for packaging. If the profit on the general type is $10 and on the senior type $8, how many of each type should they make to maximize profit? What is the maximum profit