A university employs a total of 540 teaching assistants and research assistants. There are two times as many teaching assistants as research assistants. Find the number of research assistants employed by the university.

180

Step-by-step explanation:

Let the number of research assistants employed be y

Given that there are two times as many teaching assistants as research assistants, then

Number of teaching assistants = 2y

Since there are 540 employed

y + 2y = 540

3y = 540

y = 540/3

y = 180

There are 180 research assistants employed by the university.