Question

A university employs a total of 600 teaching assistants and research assistants. There are four times as many teaching assistants as research assistants. Find the number of research assistants employed by the university.

Answer 1

Let the number of research assistants be $x$

Then the number of teaching assistants be $3x$

Then ,

$x + 4x=600$

$5x = 600$

$x = \frac{600}{5}$

$x = 300$

Hence the number of research assistants is 300