What percent is 9 out of 20?

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Answer 1 · 2017-02-28T14:53:44

9 out of 20 = 45%

"Percent" or "%" means "out of 100" or "per 100", Therefore x% can be written as $x/100$ .

We can write and solve this as:

$x/100 = 9/20$

$color(red)(100) xx x/100 = color(red)(100) xx 9/20$

$cancel(color(red)(100)) xx x/color(red)(cancel(color(black)(100))) = cancel(color(red)(100))5 xx 9/color(red)(cancel(color(black)(20)))$

$x = 5 xx 9$

$x = 45$