Question
Bella has 7 test grade in the grade book. she has a 90 overal. she gats a 75 of one test what is her score now
Answers
GPT-4o mini
To calculate Bella's new average after receiving a score of 75 on one test, we can follow these steps:
1. First, calculate the total score for the 7 tests before the new score.
Since her overall average is 90 and she has 7 tests, her total score can be calculated as:
\[
\text{Total score} = \text{Average} \times \text{Number of tests} = 90 \times 7 = 630
\]
2. Next, subtract the score of the test that is now recorded (75) from the total score:
\[
\text{New total score} = 630 - 75 = 555
\]
3. Now, add the new score (75) to get the new total score after including the test:
\[
\text{New total score} = 555 + 75 = 630
\]
4. Finally, divide the new total score by the new number of tests (which is now 8 since she has taken 8 tests):
\[
\text{New average} = \frac{\text{New total score}}{\text{Number of tests}} = \frac{630}{8} = 78.75
\]
So, after receiving a score of 75 on the test, Bella's new average is **78.75**.
1. First, calculate the total score for the 7 tests before the new score.
Since her overall average is 90 and she has 7 tests, her total score can be calculated as:
\[
\text{Total score} = \text{Average} \times \text{Number of tests} = 90 \times 7 = 630
\]
2. Next, subtract the score of the test that is now recorded (75) from the total score:
\[
\text{New total score} = 630 - 75 = 555
\]
3. Now, add the new score (75) to get the new total score after including the test:
\[
\text{New total score} = 555 + 75 = 630
\]
4. Finally, divide the new total score by the new number of tests (which is now 8 since she has taken 8 tests):
\[
\text{New average} = \frac{\text{New total score}}{\text{Number of tests}} = \frac{630}{8} = 78.75
\]
So, after receiving a score of 75 on the test, Bella's new average is **78.75**.