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

### Instruction:
 Tina ananunua mkate kwa $50, hamu ya 2oz kwa $150, na keki kwa $200. Asilimia ngapi ya gharama ni ya hamu na mkate?


### Response:
 Gharama jumla ni $50+$150+$200=$<<50+150+200=400>>400.
Gharama ya hamu na mkate ni $50+$150=$<<50+150=200>>200.
Asilimia ya gharama ni $200/$400=<<200/400=0.5>>0.5, au 50%