The number of crates of the first cargo, x, is equal to A truck traveling from one city to another is to be loaded with two types of cargo. Let x be the number of crates of the first cargo and y the number of crates of the second cargo. How many crates of each cargo should be shipped in order to yield the greatest earnings if the objective function is 13x + 8y? (See the graph of the feasible set below.) y = ---}x+60 ve y = 2x feasible x + 120