Bunuel wrote:
In Clarice’s class, each test weights her overall grade average three times as much as each quiz does. If Clarice scored 88 and 94 on two quizzes, respectively, and she scored 90 on the only test, what is her current overall grade average?
(A) 90.5
(B) 90.4
(C) 90.3
(D) 90.2
(E) 89
We can create the equation:
[94 + 88 + 3(90)]/(1 + 1 + 3)
(182 + 270)/5 = 452/5 = 90.4
Answer: B
