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This Discounted Price calculator computes the sale price when TWO discounts are applied. It answers the question, "How much will I have to pay for this item that is on sale if I get an additional discount at checkout?
INSTRUCTIONS: Choose units and enter the following:
- (pBd) Price Before Discount is applied
- (D1) First discount percentage (for example, if discount is 10% enter 10)
- (D2) Additional discount percentage (Discount_2)
- (SSTR) State Sales Tax Rate (default 0%)
Discounted Price (dP): The calculator returns the fully-discounted pre-tax price and the final (taxed) price in US dollars. However, these can be automatically converted to compatible units via the pull-down menu.
The Math / Science
The formula for the Discounted Price is:
dP = pBd - (pBd* D1) - [pBd - (pBd* D1)] * D2
where:
- dP = Discounted Price after both the original and additional discount percentages
- pBd = price BEFORE discount
- D1 = First or Original Discount
- D2 = Second Discount
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This Discounted Price equation calculates the sale price when TWO discounts are applied. It answers the question, "How much will I have to pay for this item that is on sale if I get an additional discount at checkout?". For example: A shirt originally costs $100 but is on sale for 20% off with an additional 10% off at checkout. Your final cost for the shirt (excluding tax) is $72. |
