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

### Instruction:
Betty bought 1 kg of oranges and 3 kg of apples. The total cost of oranges was $12. The apples were two times cheaper than the oranges. How much did Betty pay for 1 kg of apples?

### Response:
 Mapera yalikuwa mara mbili ya bei ya machungwa, hivyo gharama ya kilo 3 za mapera ilikuwa 12 / 2 = $<<12/2=6>>6.
Hii inamaanisha, kwamba kilo 1 ya mapera ilikuwa gharama ya 6 / 3 = $<<6/3=2>>2.