Explanation:
To find the number of people who attended the concert on Sunday, we need to add 13,000 to the number of people who attended on Saturday night.
On Saturday night, 89,310 people attended the concert.
So, to find the number of people who attended on Sunday, we add 13,000 to 89,310:
89,310 + 13,000 = 102,310.
Therefore, 102,310 people attended the concert on Sunday.