Percentage of Students in Activities

In a recent survey conducted among high school students, 80% reported that they participate in extracurricular activities, while 60% indicated that they hold a part-time job. The survey also revealed that approximately 30% of the students engage in both extracurricular activities and part-time work. Based on this information, if we randomly select a high school student from this group, what percentage of students are involved in either extracurricular activities or part-time jobs, or both?