A marketing manager wishes to maximize the number of people exposed to the company's advertising. He may choose television commercials, which reach 20 million people per commercial or magazine advertising, which reaches 10 million people per advertisement, Magazine advertisements cost $40,000 each while a television advertisement costs $75,000. The manager has a budget of $2,000,000 and must buy at least 20 magazine advertisements. How many units of each type of advertising should be purchased? (Use Graphical Method)