What is 30% off $40?
Price after 30% off
$28.00
You save $12.00
How it's calculated
- Find the discount: 30% of $40 = $40 × 0.3 = $12.00
- Subtract it from the price: $40 − $12.00 = $28.00
Shortcut: with 30% off you pay 70% of the price, so multiply $40 × 0.7 = $28.00 in one step.
Sales tax, if any, is usually added after the discount and isn't included here.