Final answer:
The sister received a total of 62% when adding the 60% from the six kids, who each gave 10%, and the 2% from her mother.
Step-by-step explanation:
To solve how many percent the sister got in all from her birthday presents, we need to add the percentages contributed by the six kids and her mother. Each kid gave her 10%, so we multiply 10% by 6 kids to find out the total percentage from the kids. Then we add the 2% from her mother to that total.
First, we calculate the total percentage from the kids: 6 kids × 10% = 60%.
Next, we add the mother's contribution to find the total percentage: 60% + 2% = 62%.
Therefore, the sister received 62% in total from six kids and her mother.