To find 40% of 25, you can follow a simple formula where you multiply the percentage (in decimal form) by the number you are interested in. In this case, convert 40% into a decimal by dividing it by 100, which gives you 0.40.
Next, multiply 0.40 by 25:
0.40 x 25 = 10
So, 40% of 25 is 10. This means if you were to divide 25 into 100 equal parts, taking 40 of those parts would give you a total of 10.