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

### Instruction:
 Mirasol alikuwa na $50 katika akaunti yake. Alitumia $10 kwa kahawa na $30 kwa kikombe. Kiasi gani kimesalia katika akaunti yake?


### Response:
 Kahawa inagharimu $10, hivyo gharama ya jumla kwa kahawa na kikombe ni $10 + $30 = $<<10+30=40>>40.
Mirasol ana $50, hivyo $50 - $40 = $<<50-40=10>>10 kimesalia katika akaunti yake.