A store sells a certain type of shirt for $10. The store is offering a discount of 20% on all shirts. What is the final price of the shirt?

To find the final price of the shirt after applying a 20% discount, we need to calculate the discount amount and subtract it from the original price. First, let's calculate the discount amount:
Discount amount = Original price * Discount rate = $10 * 0.20 = $2

Next, we subtract the discount amount from the original price:
Final price = Original price - Discount amount = $10 - $2 = $8

Therefore, the final price of the shirt, after applying a 20% discount, is $8.