K Use the percent formula, $A=P B: A$ is $P$ percent of $B$, to answer the following question. 3 is what percent of 30 ? $\%$

Step 1 ：Let's use the percent formula, $A=P B$, where $A$ is $P$ percent of $B$, to answer the question: 3 is what percent of 30?

Step 2 ：To find the percentage, we need to divide the smaller number by the larger number and then multiply by 100. In this case, we need to divide 3 by 30 and then multiply by 100.

Step 3 ：Let's denote $A$ as 3 and $B$ as 30.

Step 4 ：Calculate the percentage as follows: \(\frac{A}{B} \times 100\)

Step 5 ：After calculation, we find that the percentage is 10.0

Step 6 ：So, the final answer is: 3 is \(\boxed{10\%}\) of 30.