Answer:
I have to pay 20% of the regular price.
Explanation:
Let the regular price of the item is $x.
Now, I have to pay 25%, if the regular price of the item was 20% taken off the regular price.
So, the price of the item after the 20% price is taken off the regular price is
.
So, I have to pay 25% of that price, i.e.
Now, if I have to pay y% of the regular price, then
(Given)
⇒ y = 20%
Therefore, I have to pay 20% of the regular price. (Answer)