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

### Instruction:
 Soksi mbili nyeupe zinagharimu senti 25 zaidi ya soksi moja ya kahawia. Ikiwa soksi mbili nyeupe zinagharimu senti 45, utalipa kiasi gani kwa soksi 15 za kahawia?


### Response:
 Soksi moja ya kahawia inagharimu senti 45 - senti 25 = <<45-25=20>>20.
Gharama ya kununua soksi 15 za kahawia ni soksi 15 x $0.20/soksi = $<<15*0.20=3>>3.