A laptop's original price is $795. If it's on sale for 20% off, what is the sale price?

To find the sale price of the laptop, you first need to calculate the amount of the discount that is applied. The original price of the laptop is $795, and the discount is 20%.

To calculate the discount, you multiply the original price by the discount rate (expressed as a decimal):

Discount = Original Price × Discount Rate = $795 × 0.20 = $159.

Next, you subtract this discount from the original price to determine the sale price:

Sale Price = Original Price - Discount = $795 - $159 = $636.

This calculation shows that the sale price after applying the 20% discount is indeed $636, making this the correct answer.