'''
    DS2000
    Spring 2020
    Sample code from class: Update the average ACT of
    incoming Northeastern first-year students
    with a new score from one student.

    In this module, we define the function.
'''

def update_act(curr_act, num_students, new_score):
    ''' Function update_act
        Parameters: curr_act (float/int), num_students (int),
                    new_score (int)
        Returns: updated ACT average from adding the one new
                 student (float)
        Does: recomputes average ACT score. Assuming num_students is
              the number of students currenctly factored into the average.
              Adds in exactly one more student, with the given score..
    '''
    curr_total = curr_act * num_students
    num_students += 1
    new_act = (curr_total + new_score) / num_students
    return new_act