At a particular school $50 \%$ of children travel by bus. If this represents 550 children, how many children attend the school? Attendees $=$

Step 1 ：Let x be the total number of children attending the school. Then, we can set up the proportion: \(\frac{550}{x} = \frac{50}{100}\)

Step 2 ：Solve for x: \(x = \frac{550 \times 100}{50}\)

Step 3 ：Calculate x: \(x = 1100\)

Step 4 ：\(\boxed{1100}\) children attend the school.