Percentages are
a. expressing how many out of 100.
b. able to be written as a decimal.
c. able to be written as a fraction out of 100.
d. all of the above

Answer would be D. Let me give you an example. Question: Express 0.25 as a percentage. Easiest method would be to multiply the decimals by 100 and you'll get 25%. Question: Express 25% as a fraction. Okay, all percentages are expressed as over 100. So, 25/100 = 1/4 When 1/4 can also be expressed as a decimal by using a calculator. 1/4 = 0.25 Therefore, answer is all of the above. :)

If you make it a little more clear i can answer it