Answer:
It will take Joyce 90 minutes to complete 3 pedicures.
Step-by-step explanation:
Given the table in the attached image.
From the table it takes Joyce 30 minutes to complete 1 pedicure.
So, to complete 3 different pedicures, it will take Joyce 3 times amount of time for 1 pedicure;

Therefore, it will take Joyce 90 minutes to complete 3 pedicures.
Note: this solution is correct if Joyce cannot give more than one Pedicure simultaneously.