Respuesta :

p + 18 = 41
p = 41 - 18
p = 23

answer is C. 
p + 18 = 41, p = 23
The answer would be p + 18 = 41 ; p = 23. Here's why.

Paper books
 ∨                   
  p + 18 = 41 < Total of Books sold
         ∧
Hardcover books

I hope this helps love! :)