I need to know how to complete this pseudocode question in 1 algorithm?

Consider two sections of cles (cl A and cl B). A list exists that has a record of each student, in a random sequence, with the student’s mark, name and section. Develop an algorithm to determine the average mark in each section, the overall average, and the percentage of students overall that had a mark higher than the overall average. Specify the algorithm using pseudo-code.