Lizzy: The half-hour newscast includes 12 minutes of national news, 5 minutes of international news, 5 minutes of sports, and 2 minutes of weather forecasts. The rest is advertisements. How many minutes of advertising are in the newscast?.
Me: Hmmm, let me think. I think this is the detailed solution:
12 + 5 + 5 + 2 = 24 minutes are accounted for. There are 30 - 24 = 6 minutes of ads. Final answer: 6.