Question

Mildred has seven grades on her report card. The overall average of these grades is 77%. After looking more closely at her report card, Mildred realizes that her English grade was incorrectly recorded as 18% instead of 81%. What is mildred’s Actual report card average?

Answer 1

Answer:

Mildred's actual report card average would have to be 86%

Answer 2

Answer:

86%

Step-by-step explanation:

We have been given that Mildred has seven grades on her report card. The overall average of these grades is 77%.

Since her average grades are 77, so total scores on 7 grades would be $77\times 7=539$

As her grades on English were incorrectly recorded as 18% instead of 81%, so we will find the difference of grades.

$81-18=63$

Since the incorrect total is 63 less than actual total, so we will add 63 points to total grades as:

$\text{Actual sum}=539+63=602$

Now we will divide actual sum by 7 to find actual report card average.

$\text{Actual report card average}=\frac{602}{7}$

$\text{Actual report card average}=86$

Therefore, Mildred's actual report card average is 86%.