# A computers fan rotates 2000 times in 40 seconds. How do you find the unite rate in rotations per second?

Nov 7, 2016

$50$ rotations per second

#### Explanation:

$2000 \text{ rotations}$ in $40 \text{ seconds}$
could be written as
$\textcolor{w h i t e}{\text{XXX")(2000" rotations")/(40" seconds}}$

$\textcolor{w h i t e}{\text{XXX")=(cancel(200)^50cancel(0)" rotations")/(cancel(4)cancel(0)" seconds}}$

color(white)("XXX")=50 "rotations"/"second"