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

### Instruction:
 Shati tano zina gharama ya $85. Kati ya mashati hayo 5, kuna mashati 3 ambayo kila moja lina gharama ya $15. Ikiwa mashati yaliyobaki yana thamani sawa, ni gharama gani, kwa dola, ya shati moja lililobaki?


### Response:
 Mashati 3 yanagharimu $15 kila moja, kwa jumla ya 3*$15=$<<3*15=45>>45.
Kuna mashati 5-3=<<5-3=2>>2 yaliyobaki.
Mashati 5 yanagharimu $85 jumla, maana yake mashati 2 yaliyobaki yanagharimu $85-$45=$<<85-45=40>>40.
Shati moja lililobaki linagharimu $40/2=$<<40/2=20>>20.