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

### Instruction:
 James ameamua kubadilisha gari lake. Alishauza gari lake lenye thamani ya $20,000 kwa 80% ya thamani yake na kisha alifanikiwa kubishana kununua gari lenye thamani ya $30,000 kwa 90% ya thamani yake. Alikuwa na kiasi gani mkononi?


### Response:
 Alishauza gari lake kwa 20000*.8=$<<20000*.8=16000>>16,000
Alichonunua gari jipya kwa 30,000*.9=$<<30000*.9=27000>>27,000
Hivyo, alikuwa na kiasi cha 27,000-16,000=$<<27000-16000=11000>>11,000 mkononi.