3/40 = 7.5%
A fraction like 3/40 can show up when a small part of a group is being described, such as 3 out of 40 students choosing a certain option. It represents 7.5%, which could also describe a small service fee, a discount, or the portion of a budget used for one minor expense.
To picture 3/40 quickly, imagine a strip divided into 40 equal pieces with only 3 shaded. It is a little more than 1 out of every 10 parts, so you can estimate it as a small amount—less than one-tenth but fairly close.
A common mistake is thinking 3/40 is 30% because the numerator is 3 and the denominator includes a 4. The denominator matters most for judging the size: 3 out of 40 is much smaller than 3 out of 10.
