the marked price is 280.00 and the rate of discount is 20% now find out the discount and sale price

To find out the discount amount, multiply the marked price by the rate of discount (expressed as a decimal):

Discount = Marked price * Rate of discount
Discount = $280.00 * 0.20
Discount = $56.00

The discount amount is $56.00.

To calculate the sale price, subtract the discount amount from the marked price:

Sale price = Marked price - Discount
Sale price = $280.00 - $56.00
Sale price = $224.00

The sale price is $224.00.