To find the sale price of the item, you start with the original price, which is $35. The other tag states that there is a discount of $20 off the original price.
You simply subtract the discount from the original price:
Sale Price = Original Price – Discount
Sale Price = $35 – $20
Sale Price = $15
So, the sale price of the item is $15. After applying the $20 discount, this is the amount you would pay.