Mathematics for IGCSE & O level - Percentages (Section 2 - No. 15)
Which of the following are correct ways to calculate a discount on a product?
Multiply the original price by the discount percentage.
Subtract the discount amount from the original price.
Multiply the original price by (1 - discount percentage).
Add the discount percentage to the original price.
Explicació
A discount is subtracted from the original price. The method multiplies by the complement.