Question

A​ student's course grade is based on one midterm that counts as 20​% of his final​ grade, one class project that counts as 5​% of his final​ grade, a set of homework assignments that counts as 35​% of his final​ grade, and a final exam that counts as 40​% of his final grade. His midterm score is 63​, his project score is 97​, his homework score is 85​, and his final exam score is 77. What is his overall final​ score? What letter grade did he earn​ (A, B,​ C, D, or​ F)? Assume that a mean of 90 or above is an​ A, a mean of at least 80 but less than 90 is a​ B, and so on. His overall final score is 297. ​(Type an integer or a decimal rounded to one decimal place as​ needed.)

Answer 1

• 78
• C

Explanation:

The weighted average of the student's scores is ...

0.20×63 +0.05×97 +0.35×85 +0.40×77 = 78

The student's overall final score is 78.

__

The letter grade earned is between 70 and 80, so is a C.