Jasmine, a sign maker for a store, makes a sign advertising airplane calendars for sale at a price of $12 each. However, the airplane calendars only cost the store $5 each. What is the mark-up percentage?
Write your answer using a percent sign (%)
The mark-up percentage can be calculated by dividing the difference between the selling price and the cost price by the cost price and multiplying it by 100.
Selling price = $12
Cost price = $5
Mark-up = Selling price - Cost price = $12 - $5 = $7
Mark-up percentage = (Mark-up / Cost price) * 100
= ($7 / $5) * 100 = 140%
Therefore, the mark-up percentage is 140%.