Question 4255
Are you saying that the discount amounted to $2,200?  Assuming that this is what you meant, 


Let x = original price of the car.  


The discount is:   20% of x = 2200 

.2x = 2200


Divide both sides of the equation by .2 in order to solve for x.


x = 2200/.2 
x = 22000/2 = $11000

Now, x is the original price, so the selling price after the discount, subtract off the $2200, which makes the discount price $11000-2200 = $8800.


A faster way might be to say that after a 20% discount, you have to pay 80%, which is 4 times the discount.  So multiply the discount $2200 times 4 = $8800.