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The problem presented in the image asks to find the ratio of girls to boys in a class of 28 students, where there are 19 boys.

### Solution:
1. The total number of students in the class is **28**.
2. The number of boys is **19**.
3. To find the number of girls, subtract the number of boys from the total number of students:
   \[
   \text{Number of girls} = 28 - 19 = 9
   \]
4. The ratio of girls to boys is therefore **9:19**.

### Correct Answer:
- The correct choice is **9:19**.

Would you like a more detailed explanation or have any further questions?

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Here are 5 related questions for practice:
1. What is the ratio of boys to the total number of students?
2. If 5 more girls joined the class, what would the new ratio of girls to boys be?
3. How many girls would there need to be for the ratio of girls to boys to be 1:1?
4. If 3 boys left the class, what would the new ratio of girls to boys be?
5. What percentage of the class are girls?

**Tip:** Ratios can be simplified just like fractions, by dividing both numbers by their greatest common divisor (GCD).

In a class with 28 students, there are 19 boys. What is the ratio of girls to boys?

Learn how to calculate the ratio of girls to boys in a class of 28 students where 19 are boys. This problem involves basic arithmetic operations and understanding ratios, suitable for students in Grades 5-7.

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