Answer: 5%
Step-by-step explanation:
1. 20-19= 1
2. [tex]\frac{1}{20}= \frac{x}{100}[/tex] Part/whole = Percent (X) /100
3. Cross multiply: 100 = 20x
4. Divide to isolate the variable: [tex]\frac{100}{20} = \frac{20x}{20}[/tex]
5. X=5
So the discount percentage is 5%.
