To find the percentage Corey saved on the surfboard, we first need to determine the amount saved as a fraction of the original price and then convert it to a percentage.
Corey saved $128.00 on a surfboard with a regular price of $512.00. To find the fraction of the original price he saved, we divide the amount saved by the original price:
Fraction saved = Amount saved / Original price = 128 / 512 = 1/4
Now, to express this fraction as a percentage, we multiply by 100:
Percentage saved = (1/4) * 100 = 25%
So, Corey saved 25% of the original price.