Study the charts given below carefully and answer the following questions. Pie…

Study the charts given below carefully and answer the following questions. Pie chart shows the percentage distribution of total students (Science + Commerce) in 12th class of five different Zones and table shows the number of students in same class in science of same zones.

If monthly library fee per student in Central zone for commerce students is Rs.60 which is Rs.20 less than that for science students, then find total monthly fee of library of Central zone.