Answer: Blueberry = $6, Pumpkin = $17
Explanation:
Let B represent blueberry pie and P represent pumpkin pie.
 Kim: 12B + 8P = 208
- Krystal: 10B + 8P = 196 
 2B = 12
  B = 6
Input B = 6 into either of the equations to solve for P
 10B + 8P = 196
10(6) + 8P = 196
 60 + 8P = 196
 8P = 136
 P = 17