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

### Instruction:
Two white socks cost 25 cents more than a single brown sock. If two white socks cost 45 cents, how much would you pay for 15 brown socks?

### 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.