12.8
12+(16/x)
105
if a number is "x" then it is 2x-16
30
The expression is: 2x-16
It can't be one. Mixed numbers are greater than 100 percent.
12+(16/x)
16 + 3x
That would be every number greater than 0.25 and less than 0.6 . There are an infinite number of them.
2,410
81.25
1236
105
135
In order to have an average, you need to have more than one figure to add together and then divide.
Just as 25 is greater than 5 (or 05) so 25% of a number is greater than 5% of that number.
There's more than one number ! There are sixteen 'factors' (numbers that can go into 186) and they are; 1,2,3,4,6,7,8,12,14,21,24,28,42,62,84 and of course 186.