Respuesta :
Answer:
a) 80% b) $80 c) $ 320
Step-by-step explanation:
Let the original price be $ 100
Discount= 20%
Hence, the selling price is= $ 100 ×[tex]\frac{100- 20}{100}[/tex]
Hence, the selling price is= $ 80
let selling price x % of original price
$ 80= [tex]\frac{x}{100}[/tex] × 100
x = 80%
Selling price is 80% of original price
b) If the original price= $ 400
Discount = $ 400 × [tex]\frac{20}{100}[/tex] 80
Discount =$ 80
c) Selling price= $ 400 [tex]\frac{(100-20)}{100}[/tex]
Selling price= 4× 80
Selling price= $320
