Wednesday

April 23, 2014

April 23, 2014

Posted by **sasha** on Thursday, October 18, 2007 at 9:01pm.

- math ( average) -
**Reiny**, Thursday, October 18, 2007 at 9:10pm(79+88+64+78+newtest)/5 = 80

solve for "newtest"

- math ( average) -
**Emily**, Thursday, October 18, 2007 at 9:11pmLet's say the score of the 5th test her is x. To get an average of something, you add everything up and divide by the number of numbers (in this case, tests), right? So, this is how you would set this one up:

79+88+64+78+x

------------- = 80

5

Can you solve the rest?

- math ( average) -
**Ms. Sue**, Thursday, October 18, 2007 at 9:13pmThe student needs a total of 400 points on 5 tests to get an average of 80.

He has a total of 309 on the first four tests. What score does he need on the fifth test to bring his total up to 400?

- math ( average) -
**Anonymous**, Friday, January 20, 2012 at 3:38pm91

- math ( average) -
**Jeremiah**, Wednesday, July 17, 2013 at 10:02pmWhat is the next step after adding and dividing?

**Related Questions**

8th grade - Tom had scores of 78, 88, 94 and 79 on his first four science tests...

math - To obtain a final average of 80 % in a certain subject, what grade must a...

math - In his algebra class, Rob has scores of 79, 85, 81, and 65 on his first ...

Pre Algebra - In Wilbur's math class, his grade is based on the average score of...

math - Jill knows her average score on five tests is 88. She can find all but ...

Math - In Wilbur's math class, his grade is based on the average score of six ...

math - If you earn the grades of 81, 84, 78, 80 in four tests what should your ...

Math - During a semester, a student received scores of 76, 80, 83, 71, 80, and ...

algebra - if a student has an average of 8 after 20 tests and then gets a 0 on ...

Algebra - A student is taking a literature course in which four tests are given...