Question

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.

Answer 1

180

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.