Question

A math club took a math test. Twelve of the members had an average score of 80. Eighteen of the members had an average score of 86.
What was the class average?

Answer 1

Just took the quiz, the real answer is 83.6, and not "83" or whatever.

Hope this helps guys.

Answer 2

The solution would be like this for this specific problem:

 

86 + 80 = 166

166 / 2 = 83

 

So the class average is 83.

In colloquial language, an average is the sum of a list of numbers divided by the number of numbers in the list.