<span>a mathematical expression or function so related to another that their product is one; the quantity obtained by dividing the number one by a given quantity. </span>
11% of 60000 is 3300 per year. You need the value for five years so multiply 3300 * 5 to get 33000. 33000 is the total depreciation of the five years. Then subtract 33000 from 60000 to get 27000.