The pie-chart given below given information about the number of students from five sections A, B, C, D, and E, of class 12 of a school to have appeared and to have passed in the final examination. 

The pie-chart on the left given the central angles of the sectors represent the students appearing in the exam from the five different sections, while the pie-chart on the right gives the section-wise numbers of students to pass the exam as percentage of the total number of students who passed the exam from all the five sections taken together. 

Find the ratio of the average of the number of students who appeared in the exam from section A, B and C to the average of the number of students who passed from Section B, C and D.