There are 13 students at Elmdale Middle School who play on a sports team. This is 15 percent of the total number of students.
(a)Draw a double number line that can be used to find the total number of students at the school.
(b)What is the total number of students at the school?
(a) Here is a double number line that can be used to find the total number of students at the school:
```
|-------------------------|------------------------|
0 13 ?
```
The left endpoint represents 0 students (the minimum number of students) and the right endpoint represents the total number of students at the school (the maximum number of students). The point in the middle represents 13 students (15% of the total number of students).
(b) To find the total number of students at the school, we can use the information given - 13 is 15% of the total. Let's set up a proportion:
15/100 = 13/x
Cross-multiplying, we have:
15x = 13 * 100
15x = 1300
Dividing both sides by 15:
x = 86.67
So, the total number of students at the school is approximately 86.