Question A certain company manufactures skateboards and rollerskates. It takes them 2 units of labor and 1 unit of materials to produce a skateboard, and 1 unit of labor and 2 units of materials to produce a pair of rollerskates. They have 30 units of labor and 40 units of materials each week. If the company makes a profit of $ 20 on each skateboard and $ 15 on each pair of rollerskates, what is the number of skateboards the company should produce in order to maximize profit?