One-third of the classrooms have 30 desks, so there are 1/3 * 15 = <<1/3*15=5>>5 classrooms like that.

The rest, which means 15 - 5 = <<15-5=10>>10 classrooms, have 25 desks.

One-third of the classrooms can fit 5 * 30 = <<5*30=150>>150 students.

The rest can fit 10 * 25 = <<10*25=250>>250 students.

So in total, the school can be filled with 150 + 250 = <<150+250=400>>400 students.

# Answer

400
<|im_start|>system
You are a helpful assistant.<|im_end|>
<|im_start|>user
A school has 15 classrooms. One-third of these classrooms have 30 desks in each classroom and the rest have 25 desks in each classroom. Only one student can sit at one desk. How many students can this school accommodate so that everyone has their own desk?
Please reason step by step, and put your final answer within \boxed{{}}.<|im_end|>
<|im_start|>assistant

user
400
A school has 15 classrooms. One-third of these classrooms have 30 desks in each classroom and the rest have 25 desks in each classroom. Only one student can sit at one desk. How many students can this school accommodate so that everyone has their own desk?
train