Problem Solving (PS) | Re: Among the students in a particular school.....

Among the students in a particular school, 50 percent participate in sports-related activities, 60 percent either have classroom or extracurricular exposure to the arts, and 20 percent are involved in both activities. If 40 students are not involved in either of these pursuits, how many students attend this school?

A. 180
B. 320
C. 400
D. 560
E. 800