A Psychology course has two midterms and a final exam. Midterm 1 is worth 21% of the final grade, Midterm 2 is worth 37%
of the final grade, and the final exam is worth 42%. The instructor assigns grades as marks on 100. If a student received a
mark of 75.5 on the first midterm and 70.75 on the second, what mark does she need on the final exam to get a final grade of
80 in the course?
Please enter your answer correctly rounded to at least 5 decimal places
