Posted by **Alyssa** on Monday, February 4, 2013 at 4:08pm.

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?

- math -
**Steve**, Monday, February 4, 2013 at 4:21pm
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.

## Answer This Question

## Related Questions

- math average! - My average is a 74 right now. My grades are 70( which counts as ...
- math - If you earn the grades of 81, 84, 78, 80 in four tests what should your ...
- math - If you earn the grades of 81, 84, 78, 80 in four tests what should your ...
- Math - In Wilbur's math class, his grade is based on the average score of six ...
- Maths - Jim has grades of 84, 65, and 76 on three math tests. What grade must he...
- math - jim has grades of 84, 65, 76 on three tests. what grade must he obtain on...
- math - Jim has grades of 84, 65, and 76 on three math tests. What grade must he ...
- algebra (i need help calculating my grade) - i have exams tomorrow and i would ...
- Math - To pass a course with a C grade, a student must have an average of 70 or ...
- Math - Wanda wants to have a test average of 90 her four science tests. On the ...

More Related Questions