Please who will bail me out ,correct answer becomes the brainliest :if at $8:00 per tuber, twenty tubers were demanded and when the price fell to $6:00 per tuber, thirty tubers were demanded. what is the elasticity of demand ​

Southeastern oklahoma state university's business program has the facilities and faculty to handle an enrollment of 2,000 new students per semester. however, in an effort to limit class sizes to a "reasonable" level (under 200 generally), southeastern's dean, holly lutze, placed a ceiling on enrollment of 1,600 new students. although there was ample demand for business courses last semester, conflicting schedules allowed only 1,440 new students to take business courses.the utilization rate for southeastern=%the efficiency rate for southeastern=%