Question

Olivia is calculating her grade in math class. Her scores for the class are recorded in the table below.sores are test 1 is 83, test 2 is 95, midterm is 84, test 3 is 93, test 4 is 84, test 5 is 92 and the final exam is 90.what is Olivia's grade in math class,rounded to the nearest percent? A. 84%B. 87%C. 88% D. 89% I'm confused on this question please help me.

Answer 1

The grade of Olivia in the Maths class can be found by dividing the obtained marks by the total marks.

The obtained marks are below

Test 1 = 83

Test 2 = 95

Midterm = 84

Test 3 = 93

Test 4 = 84

Test 5 = 92

Final = 90

So the obtained marks are

Obtained marks = 83+95+84+93+84+92+90 = 621

The total possible marks are

Total marks = 7*100 = 700 (since there are 7 assessments each worth 100 marks)

`\begin{gathered} grade=\frac{\text{obtained marks}}{\text{total marks}}*100\% \\ grade=(621)/(700)*100\% \\ grade=88.71\% \end{gathered}`

Rounding off to the nearest percent, we get

`grade=88.71\%=89\%`

Therefore, Olivia's grade in Maths class is 89%

Option D is the correct answer.