A $100 item is 20% off. What is the sale price?
The sale price is $80. You save $20.
How to work it out
- 1
The original price is $100 and the discount is 20%.
- 2
Method 1: find the discount, then subtract it.
- 3
Method 2: you pay 80% of the price, so multiply by 0.8:
- 4
Answer: the sale price is $80 and you save $20.
LaTeX source of the formulas on this page
\[ 100 \times 0.8 = 80 \]
\[ 20\% \text{ of } 100 = 0.2 \times 100 = 20\qquad 100 - 20 = 80 \]$100 at other discounts
| Discount | Sale price |
|---|---|
| 5% off | $95 |
| 10% off | $90 |
| 15% off | $85 |
| 25% off | $75 |
| 30% off | $70 |
| 40% off | $60 |
| 50% off | $50 |
Questions
What is 20% off $100?
The sale price is $80. You save $20.
How do I find the sale price quickly?
Multiply the price by 0.8 (that is 100% − 20%).