Ok, so rembmer some basica exponential rules and some fraction rules
(ab)/(cd)=(a/c)(b/d)
and

so
16 is 25% of 64.
<h3>What are percentages?</h3>
Percentage is the fraction of an amount that is usually expressed as a number out of hundred. Percentages are a measure of frequency.
In order to determine the number, divide 16 by 25%
16 / 25%
16 / 0.25 = 64
To learn more about percentages, please check: brainly.com/question/25764815