The regular price of an item is the non-sale price of that item.
The discount value is $11.99 and the sale price is $67.99
The sale price is 12.15
-- subtract the percent off from 100 -- divide the sale price by the answer -- multiply that answer by 100, and you have the original price
You'll save $14.85 on this item. This means, the cost of the item to you is: $99.00 - $14.85 = $84.15
You'll save $7.80 on this item. This means, the cost of the item to you is: $39.00 - $7.80 = $31.20
13.77 will be the discounted price if the standard price is 16.50.
c = 1.0825p
The sale price would be $111.00 + tax.