[Question]Michael was watching a TV show, which was aired for 1.5 hours. During this time, there were 3 commercials, which lasted 10 minutes each. How long (in hours) was the TV show itself, not counting commercials?
[Answer]Each commercial lasted 10 minutes, so three commercials lasted 3 * 10 = 30 minutes. The show was aired for 1.5 hours, and 30 minutes is 0.5 of an hour, so without the commercials, the show was 1.5 - 0.5 = 1 hour long. The answer is 1.

[Question]At a birthday party, there are 20 red balloons and 15 green balloons. Before the party started, 3 red and 2 green balloons burst. How many balloons are left?
[Answer]There are a total of 20 + 15 = 35 balloons at the party. Out of the 35, 3 + 2 = 5 balloons burst. Thus, only 35 - 5 = 30 balloons are left. The answer is 30.

[Question]There are 45 children in a classroom. One-third of them are girls. How many boys are in the classroom?
[Answer]One - third of all the kids are girls, which means 1 / 3 * 45 = 15 children. So there are 45 - 15 = 30 boys in the classroom. The answer is 30.

[Question]A box of ice cream bars costs $7.50 and contains three bars. 6 friends want to each eat 2 bars. How much money will that require per person?
[Answer]
If 6 friends each want 2 bars, that's 6 friends * 2 bars = 12 bars needed. Each box contains 3 bars, so 12 bars / 3 bars per box = 4 boxes needed. A box is $7, so 4 boxes * $7.50 = $30. There are 6 friends so $30 / 6 friends = $5 per person. The answer is 5.