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

### Instruction:
 John ameamua kupata chanjo ya COVID. Anapaswa kusubiri dakika 20 kwa dozi ya kwanza. Dozi ya pili ina muda wa kusubiri nusu ya muda huo. Muda wa kusubiri jumla ulikuwa mrefu kwa muda gani?


### Response:
 Dozi ya pili ilikuwa na muda wa kusubiri wa 20/2=<<20/2=10>>10 dakika
Hivyo muda wa kusubiri jumla ni 20+10=<<20+10=30>>30 dakika