A $20 item is 10% off. What is the sale price?
The sale price is $18. You save $2.
How to work it out
- 1
The original price is $20 and the discount is 10%.
- 2
Method 1: find the discount, then subtract it.
- 3
Method 2: you pay 90% of the price, so multiply by 0.9:
- 4
Answer: the sale price is $18 and you save $2.
LaTeX source of the formulas on this page
\[ 20 \times 0.9 = 18 \]
\[ 10\% \text{ of } 20 = 0.1 \times 20 = 2\qquad 20 - 2 = 18 \]$20 at other discounts
| Discount | Sale price |
|---|---|
| 5% off | $19 |
| 15% off | $17 |
| 20% off | $16 |
| 25% off | $15 |
| 30% off | $14 |
| 40% off | $12 |
| 50% off | $10 |
Questions
What is 10% off $20?
The sale price is $18. You save $2.
How do I find the sale price quickly?
Multiply the price by 0.9 (that is 100% − 10%).