Answer:
Step-by-step explanation:
Determine the fraction of total interest owed.
After the seventh month of a 12-month loan,
the numerator is: {(n + 11) + (n + 10) + (n + 9) + (n + 8) + (n + 7) + (n + 6) + (n + 5)} =
(63)
, and
the denominator is: {(n) + (n + 1) + ... + (n + 11)} =
(78)
.
Therefore, the fraction is numerator/denominator (to the nearest tenth) =
(80.8) %.