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

### Instruction:
 Peter alinunua karatasi za shule 4 mpya. 2 kati yao ni za kijani, moja ni nyeusi na nyingine ni ya pinki. Jumla ya gharama ilikuwa $45. Ikiwa karatasi nyeusi iligharimu $15, na ile ya pinki iligharimu $10, karatasi za kijani ziligharimu kiasi gani kila moja?


### Response:
 Karatasi nyeusi na ya pinki ziligharimu jumla ya $15 + $10 = $<<15+10=25>>25
Karatasi za kijani ziligharimu jumla ya $45 - $25 = $<<45-25=20>>20
Kila karatasi ya kijani iligharimu $20 / 2 = $<<20/2=10>>10