A $45 item is 10% off. What is the sale price?
The sale price is $40.5. You save $4.5.
How to work it out
- 1
The original price is $45 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 $40.5 and you save $4.5.
LaTeX source of the formulas on this page
\[ 45 \times 0.9 = 40.5 \]
\[ 10\% \text{ of } 45 = 0.1 \times 45 = 4.5\qquad 45 - 4.5 = 40.5 \]$45 at other discounts
| Discount | Sale price |
|---|---|
| 5% off | $42.75 |
| 15% off | $38.25 |
| 20% off | $36 |
| 25% off | $33.75 |
| 30% off | $31.5 |
| 40% off | $27 |
| 50% off | $22.5 |
Questions
What is 10% off $45?
The sale price is $40.5. You save $4.5.
How do I find the sale price quickly?
Multiply the price by 0.9 (that is 100% − 10%).