Answer:
30 %
Here are step-by-step instructions showing you how we calculated 12 out of 40 as a percentage:
The first step is to divide 12 by 40 to get the answer in decimal form:
12 / 40 = 0.3000
Then, we multiplied the answer from the first step by one hundred to get the answer as a percentage:
0.3000 * 100 = 30.00%