Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
 James ananunua pakiti 3 za pipi. Analipa kwa noti ya $20 na anapata pesa ya $11 kama mabadiliko. Kiasi gani kila pakiti ya pipi iligharimu?


### Response:
 Pipi ziligharimu 20-11=$<<20-11=9>>9
Hivyo anagharamia 9/3=$<<9/3=3>>3 kwa kila pipi.