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

### Instruction:
 Maria alinunua tiketi ya ZOO. Bei ya kawaida ni $15, lakini alipata punguzo la 40%. Maria alilipa kiasi gani kwa tiketi?


### Response:
 Punguzo ambalo Maria alipata ni 40/100 * 15 = $<<40/100*15=6>>6.
Hii inamaanisha bei ya tiketi yake ilikuwa 15 - 6 = $<<15-6=9>>9.