Asked by Alyssa
I have a 76 average right now, what grades do I need to get if i have 5 more tests and need to get an 85 average?
Answers
Answered by
Steve
Depends on how many tests you have already taken. If you have taken n tests so far, then the average on the next 5 tests must be m, where
76n + 5m = 85(n+5)
m = 85 + 9/5 n
Assuming all tests are weighted equally. As you can see, the more low scores you have contributing to the 76 average, the higher grade it will take to achieve a final 85.
In fact, if you have 9 low scores, there is no way to raise your average to 85 with 5 more tests.
9*76 = 684
14*85 = 1190
Points needed: 506
no way to get that many points in 5 tests.
76n + 5m = 85(n+5)
m = 85 + 9/5 n
Assuming all tests are weighted equally. As you can see, the more low scores you have contributing to the 76 average, the higher grade it will take to achieve a final 85.
In fact, if you have 9 low scores, there is no way to raise your average to 85 with 5 more tests.
9*76 = 684
14*85 = 1190
Points needed: 506
no way to get that many points in 5 tests.
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.