Calculate sale price, savings, and final cost after discounts. Supports multiple discount stacking.
When stores offer "extra 20% off sale prices," the discounts are applied sequentially, not added together. A 25% off + extra 20% off is NOT 45% off — it's 25% off first, then 20% off the reduced price, resulting in a 40% total discount.
| Discount | $50 Item | $100 Item | $200 Item |
|---|---|---|---|
| 10% off | $45.00 | $90.00 | $180.00 |
| 20% off | $40.00 | $80.00 | $160.00 |
| 25% off | $37.50 | $75.00 | $150.00 |
| 30% off | $35.00 | $70.00 | $140.00 |
| 50% off | $25.00 | $50.00 | $100.00 |