Question

A sixth number will be added to the list. What must it be in order for the mean to be 12?

7, 16, 11, 12, 10, __

Answer 1

Explanation:

It will have to be 16

Answer 2

16

Explanation:

7+16+11+12+10= 56

In order to find the 6th number, you must multiply 12 and 6.

12*6= 72

72-56= 16

Double check your work:

7+16+11+12+10+16= 72

72/6= 12