Use the example above and determine the fraction of total interest owed. After the fifth month of a 12-month loan:

the numerator is: {(n + ) + (n + ) + (n + ) + (n + ) + (n + )} = , and

the denominator is: {(n) + (n + 1) + ... + (n + )} = .

Therefore, the fraction is numerator/denominator (to the nearest tenth) = %.