PASCAL 2019 Problem 15

Sophie has written three tests. Her marks were 73 \%, 82 \% and 85 \%. She still has two tests to write. All tests are equally weighted. Her goal is an average of 80 \% or higher. With which of the following pairs of marks on the remaining tests will Sophie not reach her goal?

Answer Choices
A. 79 \% and 82 \%
B. 70 \% and 91 \%
C. 76 \% and 86 \%
D. 73 \% and 83 \%
E. 61 \% and 99 \%