Meet Cory, he is getting ready to ride around the city to get to his job. He starts his day like anybody would. He'd shower, eat breakfast, brush his teeth, and leave.
When he gets on the bus, he gets to use his freedom of choice, the ability to make whatever choice he wants, when picking a seat. This is beneficial to him because he now has room to sit down and allow anybody to sit with him.
Here, Cory and his boss are going over what they are told to talk about because of the command economy. This is where the government has complete control over something.
So after their meeting, they take a trip to their private property, land kept to their selves, like they do every day. When they get there, they do things the way it's always been done. This is the traditional economy because Cory's boss took over the the company from his grandfather who took it over from his grandfather.
Lets get things done today.
But every day Cory has to compete against his rival who is part of the market economy. This means they have no government interference with their work. But by selling more, Cory and his boss make profit. This means that they make money.
The competition between these two companies drives them to win. This means that they have been rivals for so long that when they fall behind, they pick back up to gain the lead in sales. These two companies together make a mixed economy. This is the combination of both command and market economies.