Final answer:
To find the sale price after a markdown, multiply the original price by the decimal form of the markdown percentage and deduct it from the original price.
Step-by-step explanation:
To find the sale price after a markdown, you need to multiply the original price by the decimal form of the markdown percentage. In this case, the original price is $325.50 and the markdown is 15%, so the decimal form of the markdown is 0.15. Multiplying $325.50 by 0.15 gives you a markdown amount of $48.825. To find the sale price, subtract the markdown amount from the original price: $325.50 - $48.825 = $276.675.