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

### Instruction:
 Don hununua chupa zinazoweza kurejeshwa katika mji mdogo. Duka A kawaida humuuzia chupa 150, duka B humuuzia chupa 180 na Duka C humuuzia chupa zilizobaki. Don hununua chupa ngapi kutoka Duka C ikiwa anaweza kununua chupa 550 tu?


### Response:
 Jumla ya chupa ambazo Don hununua kutoka maduka A, B, na C ni 150 + 180 + C = <<150+180+C=550>>550
Kwa kuwa C ni idadi ya chupa anazonunua kutoka Duka C, C = 550 - 150 - 180 = <<550-150-180=220>>220