Below is an instruction that describes a task. Write a response that appropriately completes the request in English. Please answer in English.

### Instruction:
A special school has a deaf-student population 3 times its blind-student population. If there are 180 students in total, how many blind students are there?

### Response:
Call the number of blind students x.
There are 3*x deaf students.
x+(3*x)=180
4*x=180
x=<<45=45>>45
#### 45