Divide the list price by 10 to get the discount. To convert your 10 percent into a decimal you divide by 100. The discount equals the difference between the price paid for and its par value.
The result will be the amount of the discount in dollars or the amount of money you save in the sale.
So 7189 becomes 71. Divide the list price by 10 to get the discount. Divide the list price by 5 to get the discount. The easiest way of calculating discount is in this case to multiply the normal price 100 by 10 then divide it by one hundred.