Friday

August 1, 2014

August 1, 2014

Posted by **Samantha** on Wednesday, July 11, 2012 at 4:20am.

- Math -
**Reiny**, Wednesday, July 11, 2012 at 7:23am5 numbers: a, a, b, c, c

mean = 20

--> (2a + b + 2c)/5 = 20

2a + b + 2c = 100

median = 30

---> b = 30

so we have

2a + 30 + 2c = 100

2a + 2c = 70

a+c=35

**Related Questions**

math - 14.what value of n will result in a mean if 31 15.what value of n will ...

math 115 - i am trying to find this answer there are 3 questions. 1. micheal ...

Math - 1)If a (theres a square)b is defined as the average of a and b, what is ...

math - Does anyone know how to explain mean, median, mode and range mean?? mean-...

Math - Could someone help me with this question? Make up a set of 7 numbers ...

math - Find the mean, median, and modes of the data. Which average best ...

arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...

arithmetic - 1. The first and last term of an A.P are, a and l respectively, ...

math - Please help me to find the first and third quartiles, Q1 and Q3, of the ...

math pls check - find mean,median, mode, range: for folloiwng numbers: 5, -2, 27...