 
 <translate> The second dose had a wait time of 20 / 2 = 10 minutes. So the total wait time is 20 + 10 = 30 minutes. The final answer: 30. <ibo> Oge ichere maka ọgwụ nke abụọ bụ 20 / 2 = minit 10. N'ihi ya, ngụkọta oge ichere bụ 20 + 10 = 30 nkeji. Azịza ikpeazụ ya bụ: 30. 