At the opening of a new movie, 45% of the people in the theater were children. There were 187 adults in the theater. What was the total number of people at the movie?
• A. 153
340
374
D. 416
Let's start by finding the total number of children in the theater. Since 45% of the people were children, we know that 55% were adults.
Let X be the total number of people in the theater.
Let 0.55X be the number of adults in the theater.
Let 0.45X be the number of children in the theater.
Given that there were 187 adults in the theater, we can set up the following equation:
0.55X = 187
X = 187 / 0.55
X = 340
Therefore, the total number of people at the movie was 340.
Therefore, the correct option is:
B. 340