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

### Instruction:
James buys 3 packs of candy.  He pays with a $20 bill and gets $11 change.  How much did each pack of candy cost?

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