Student tuition at Boehring University is ​$150 per semester credit hour. The state supplements school revenue by ​$80 per semester credit hour. Average class size for a typical 3​-credit course is 45 students. Labor costs are ​$4,500 per​ class, materials costs are ​$21 per student per​ class, and overhead costs are ​$27,000 per class.What is the multifactor productivity ratio for this course process?