Final answer:
To find 12.5% of a number, divide the number by 0.125.
Step-by-step explanation:
To find 12.5% of a number, you can multiply the number by 0.125, which represents the decimal form of the percentage. In this case, to find 12.5% of a number that is equal to 20, you would divide 20 by 0.125.
20 ÷ 0.125 = 160
Therefore, the number that is 12.5% of 20 is 160.