Answer:
196
Explanation:
24 / 60 = 0.4 or 40% of the sample. This means the amount of students out of all the students in the middle school that are likely to have a dog will be 40% as well. 294 / 490 = 0.6 or 60%, so this answer is wrong, but 196 / 490 = 0.4 or 40%, so that is the right answer.