Final answer:
To determine the number of fourth graders at summer art camp, calculate 22% of 100 for second graders and 1/3 of 100 for third graders, then subtract from the total. There are 45 fourth-grade campers.
Step-by-step explanation:
To find out how many campers are in fourth grade at the summer art camp, we can follow these steps:
- Calculate the number of second graders by taking 22% of 100 students, which is 22 students.
- Calculate the number of third graders by taking 1/3 of 100 students, which is approximately 33.33, rounded down to 33 students since you cannot have a fraction of a student.
- Subtract the number of second and third graders from the total number of students to find the number of fourth graders. 100 - 22 - 33 = 45 fourth graders.
Therefore, there are 45 campers in fourth grade.