In Manesa's calculus course , attendance counts for 5 % of the grade , quizzes count for 20 % of the grade , exams count for 60 % of the grade , and the final exam counts for 15 % of the grade Marissa had a 100 % average for attendance , 89 % for quizzes , 86 % for exams , and 81 % on the final .

Determine Marissa's course average in % ( Type an integer or a decimal Do not round . )

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