Question

On three examinations, you have grades of 85, 78, and 84. There is still a final examination, which counts as one grade In order to get an A your average must be at least 90. If you get 100 on the final, what is your numerical average? (Type an integer or a decimal)

Answer 1

The average of the provided grades are 86.75

Explanation:

Consider the provided information.

On three examinations, you have grades of 85, 78, and 84. In order to get an A your average must be at least 90.

In the last exam you get 100 marks now calculate the average by using the formula:

`\frac{\text{Sum of observations}}{\text{Number of observations}}`

`(85+78+84+100)/(5)`

`(347)/(5)`

`86.75`

86.75 is less than 90 so you will not get A.

The average of the provided grades are 86.75