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

### Instruction:
 Bi. Thompson alinunua kuku 3 kwa $3 kila mmoja. Pia alinunua mfuko wa viazi. Bi. Thompson alilipa jumla ya $15. Viazi viligharimu kiasi gani?


### Response:
 Kuku 3 ni sawa na $3 x 3 = $<<3*3=9>>9.
Hivyo, viazi viligharimu $15 - $9 = $<<15-9=6>>6.