How do you find the list price of an item after a mark-up?

1. A mark-up increases the wholesale price of an item to set its list price. 2. The higher price is found by adding the mark-up amount. 3. So the list price equals the wholesale price plus the mark-up. 4. Subtracting, multiplying, or dividing by the mark-up would not correctly raise the wholesale price. _Source: OpenStax Prealgebra (CC BY 4.0), Ch 6 "Percents", section 6.3 Solve Sales Tax, Commission, and Discount Applications_