What fraction represents 20%?

To determine which fraction represents 20%, it's essential to first convert the percentage into a fraction. The percent symbol (%) denotes "per hundred," so 20% can be expressed as 20/100.

Next, we can simplify this fraction. Both the numerator (20) and the denominator (100) can be divided by their greatest common divisor, which is 20. When we divide both the numerator and the denominator by 20, we get:

20 ÷ 20 = 1

100 ÷ 20 = 5

This simplification results in the fraction 1/5. Therefore, 20% is equivalent to the fraction 1/5, making it the correct representation.

By comparison, the other options do not simplify to represent 20%. 1/4 corresponds to 25%, 2/10 simplifies to 1/5 but is not the simplest form to consider in this context, and 3/15 simplifies to 1/5 as well but isn't 20% when originally evaluated. Thus, 1/5 is indeed the fraction that correctly represents 20%.