Answer:
Selling price of the XBOX 360 = $319.20
Explanation:
Given that an XBOX 360 regularly sells for $399.
That means marked price of an XBOX 360 = $399
Now we need to find about what is the sale price of the XBOX 360.
Given that it is on sale for 20% off.
Then discount = 20% of $399 = 0.20 (399)= $79.80
Then selling price of the XBOX 360 = (marked price) - (discount)
=399 - 79.80
= $319.20