Tuesday

July 22, 2014

July 22, 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**

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

math - mike has an average of 89 on the five tests he has taken so far this ...

math - A math teacher calculates grades as follows:Grade=[2 test averages+quiz ...

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

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

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

Math 208 - Grade Average A student scores 65 and 82 on two different 100-point ...

algebra - help me please... The expression for figuring a student's average test...

Math - Sarah has an 86% average on her 1st 5 tests. If she gets a 92 on her next...

MDM4UO - A teacher provides pizza for his class if they earn an a average on any...