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DigiCalcs

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A discount calculator computes the sale price after applying a percentage discount, the discount amount, or the original price from a sale price and discount percentage. Essential for retail pricing, coupon calculations, and negotiation.

Guide étape par étape

  1. 1Sale price = Original price × (1 − discount%)
  2. 2Discount amount = Original price × discount%
  3. 3Original price = Sale price / (1 − discount%)
  4. 4Successive discounts are NOT additive: 20% + 30% off ≠ 50% off

Exemples résolus

Entrée
$120 item, 25% off
Résultat
$90 sale price, $30 saved
$120 × 0.75 = $90
Entrée
Two successive discounts: 20% then 30%
Résultat
Effective discount = 44%
0.80 × 0.70 = 0.56 → 44% off, not 50%

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