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80% off $45.00
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$9.00
80% off $45.00 = $9.00 · you save $36.00
How it is calculated
- Discount amount: $45.00 × 80 ÷ 100 = $36.00
- Sale price: $45.00 − $36.00 = $9.00
Shortcut: pay 20% of the price → $45.00 × 0.2 = $9.00.
Final price with sales tax
| Sales tax | Tax | You pay |
|---|---|---|
| 0% | $0.00 | $9.00 |
| 4% | $0.36 | $9.36 |
| 6% | $0.54 | $9.54 |
| 7% | $0.63 | $9.63 |
| 8.25% | $0.74 | $9.74 |
| 9.5% | $0.85 | $9.85 |
Stacked discounts
- 80% off then an extra 10% coupon: $8.10 – a combined discount of 82%, not 90%.
- 80% off then an extra 20% coupon: $7.20 – a combined discount of 84%, not 100%.
Other discounts on $45.00
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FAQ
What is 80% off $45.00?
80% off $45.00 is $9.00. You save $36.00.
How do I calculate 80% off in my head?
Take 80% of the price ($45.00 × 0.8 = $36.00) and subtract it, or multiply by 0.2 directly: $45.00 × 0.2 = $9.00.
What is $45.00 with 80% off plus 8.25% sales tax?
$9.00 + 8.25% tax ($0.74) = $9.74. Sales tax is charged on the discounted price.
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