At a picnic, 81 people sit at 9 tables. The same number of people sit at each table. How many people sit at each table?

A. 90 people
B. 9 people
C. 72 people
D. 10 people

To find the number of people sitting at each table, we divide the total number of people by the number of tables.

81 people / 9 tables = 9 people

Therefore, the answer is B. 9 people.