Final answer:
Out of 140 people at the movie, 56 bought popcorn, 42 bought pretzels, and 14 bought pizza, calculated by taking the respective percentages (40%, 30%, and 10%) of the total number of attendees.
Step-by-step explanation:
To determine how many people bought each item at the movie theater, we need to calculate the percentages of the total number of attendees. There were 140 people at the movie. Applying percentages to this number, we get:
- Popcorn: 40% of 140 = 0.40 × 140 = 56 people
- Pretzels: 30% of 140 = 0.30 × 140 = 42 people
- Pizza: 10% of 140 = 0.10 × 140 = 14 people
Therefore, 56 people bought popcorn, 42 people bought pretzels, and 14 people bought pizza.