A student needed to get a final grade of 90 to get a grade of A for the semester. He scored 83, 85, 92, 86, and 87. If the last two scores would be counted as one score. What is the least grade the student would need to get to get a final grade of A?

Question

Is the answer 45?

Answer 1

Assume that 90 is the mean.

mean = ∑x/n = (83+85+92+86+87+x)/5 = ?

n = 5, because "the last two scores would be counted as one score."

Solve for x.

Answer 2

Thank you