A student's overall grade is determined by their scores in three subjects: Mathematics, English, and Science, with weights of 40%, 30%, and 30%, respectively. If the student scores 80, 90, and 75 in these subjects, respectively, the overall grade of the student is:
Show answer & explanation
Correct answer: A
Explanation
The correct answer is option 1 i.e 81.5.
the overall grade:
Math: 80 × 0.40 = 32
English: 90 × 0.30 = 27
Science: 75 × 0.30 = 22.5
Add = 32 + 27 + 22.5 = 81.5