Give the step-by-step reasoning process and then the final answer. Rosalina receives gifts from three people on her wedding day. How many gifts did she get if Emilio gave 11 gifts, Jorge gave 6 gifts, and Pedro gave 4 gifts?
If Emilio presents 11 gifts and Jorge 6 gifts, together they have presented 11 + 6 = 17 gifts. If Pedro also gives Rosalinda 4 gifts, Rosalinda's total number is 17 + 4 = 21 gifts.
The final answer: 21.