Final answer:
To change 15% to a common fraction, it can be represented as 15/100 and reduced to lowest terms as 3/20.
Step-by-step explanation:
To change 15% to a common fraction, we can write it as 15/100. This is because 15% represents 15 out of 100 parts. To reduce it to lowest terms, we divide the numerator and denominator by their greatest common divisor, which is 5. So, 15% in lowest terms is 3/20.
Learn more about Converting percentages to fractions