A. if an item is discounted 20%, the sale price is what percent of the original price?
b. if the original price of the item is $400, what is the dollar amount of the discount?
c. how much is the sale price?

a) 80%   b) $80   c) $ 320

Step-by-step explanation:

Let the original price be $ 100

Discount= 20%

Hence, the selling price is= $ 100 ×

Hence, the selling price is= $ 80

let selling price x % of original price

$ 80= × 100

x = 80%

Selling price is 80% of original price

b) If the original price= $ 400

Discount = $ 400 × 80

Discount =$ 80

c)  Selling price= $ 400

Selling price= 4× 80

Selling price= $320