Mrs. Bollo's second grade class of thirty students conducted a pet ownership survey. Results of the survey indicate that 8 students own a cat, 15 students own a dog, and 5 students own both a cat and a dog. How many of the students surveyed own no dogs?
A) 15
B) 8
C) 20
D) 3

Question

Quizplus · Accepted Answer

To find out how many students own no dogs, we first need to determine how many students own at least one dog. According to the survey, 15 students own a dog, but this number includes the 5 students who own both a cat and a dog. Since the question is about students who own no dogs, we subtract the number of students who own dogs (15) from the total number of students (30) to get 15 students who own no dogs.

Mrs Bollo's Second Grade Class of Thirty Students Conducted a Pet