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

### Instruction:
 James analipwa $0.50/kilomita kwa kuendesha lori linalobeba taka hatari. Analazimika kulipa $4.00/galoni kwa mafuta na lori lake linapata maili 20 kwa kila galoni. Anapata faida kiasi gani kutoka safari ya kilomita 600?


### Response:
 James analipwa $300 (kilomita 600 x $0.50/kilomita).
Anatumia $60 kwa mafuta (kilomita 600 x $4.00/galoni/20 maili kwa kila galoni).
Anapata $240 (300 - 60).