Chelsea watches 5 seasons of the Office. Each season includes 22 episodes and each episode is 25 minute long minutes long. To figure out how long Chelsea watched the Office you would set up and start the problem as shown below.

seasons X 22 episodes / 1 season X ???

What would be the next conversion factor to add to this line up?

110 episodes x 60 minutes = 660 hours

x 1 episode/25 minutes to get 4,074 minutes

25 minutes / 1 episode to get a total of 2,750 minutes.

x 1 season per 25 minutes to get a total of 100 hours.