$23.58 divided by 12 = $1.965
Each roll is about $1.97 (if you round up)
For the first 25 If they all share 25 pounds to a pound each the second I don’t understand
Rearranging the first equation gives:

Substituting this into the other equation gives:

If x=-1:

So
x=-1, y=-5
Answer:
I believe that the answer is 'n=8'.