Answer:
10% mark up
Step-by-step explanation:
To find the sale price of an item we multiply the item's price by the percent we pay. If the item is marked down by 20% then we pay 80%.
The price is $440 (0.8)= 352. The sale price is $352.
We can create a proportion to find the markup from cost price to sale price. A proportion is n equation where two ratios are set equal to each other. We create two fractions using the prices and percents.
[tex]\frac{x}{100} =\frac{352}{320}[/tex]
We begin solving by cross multiplying numerator to denominator of each fraction.
[tex]x(320)=100(352)\\320x=35200\\\frac{320x}{320}=\frac{35200}{320} \\x= 110[/tex]
This means the price was marked up from 100% of cost price by 10%.