Final answer:
To determine the number of students with perfect attendance, multiply the total number of 7th graders, 220, by 15% to get 33 students.
Step-by-step explanation:
The question asks us to find the number of 7th grade students at Western Middle School with perfect attendance, given that 15% of the students have perfect attendance. To calculate this, we can use the following steps:
- Determine the percentage of students with perfect attendance, which is 15%.
- Multiply the total number of students by this percentage to find the actual number.
There are 220 students in 7th grade, so we calculate 15% of 220:
Number of students with perfect attendance = 220 students × 0.15 = 33 students
Therefore, 33 students in 7th grade at Western Middle School have perfect attendance.