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?

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

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

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

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

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

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