Answer:
Step-by-step explanation:
The answer to the question
Let's assume the middle number is

then the smallest number is

the greatest number is

so the sum of the three number would be

and it equals 45
now we have an equation

then we solve it


, which means the middle number equals 15
so the greatest number would be

17 is the greatest number
A. 11. mode is the one that appears the most