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

1 Answer

Nov 7, 2016

$50$ $50$ rotations per second

Explanation:

$2000 rotations$ $2000" rotations"$ in $40 seconds$ $40 " seconds"$
could be written as
$XXX \frac{2000 rotations}{40 seconds}$ $color(white)("XXX")(2000" rotations")/(40" seconds")$

$color(white)("XXX")=(cancel(200)^50cancel(0)" rotations")/(cancel(4)cancel(0)" seconds")$

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

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