The cafeteria can seat 15 x 10 = <<15*10=150>>150 people.

Usually, 150 x 1/10 = <<150*1/10=15>>15 seat are unseated.

Thus, 150 - 15 = <<150-15=135>>135 seats are usually taken.

# Answer

135
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
There are 15 tables in the school's cafeteria. Each table can seat 10 people. Usually, only 1/10 of the seats are left unseated. How many seats are usually taken?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
135
There are 15 tables in the school's cafeteria. Each table can seat 10 people. Usually, only 1/10 of the seats are left unseated. How many seats are usually taken?
train