Original price is $20 and percent of discount is 20% what is the sale price

First you multiply 20 and .2 which is 4 so $4 

Then subtract 4 from 20
so 20 - 4=16 so the sale price is $16

Since the discount amount is 20%, here are the steps you must take in order to find the sale price of that certain item that is being sold. 

Step 1: Multiply 20 by the discount of 20% in order to find the discount amount and you will get 4. 
Step 2: Subtract the original price by the discount amount of 4 in order to find the new sale price of $16. 

Hope this helped you and have a good day :)