You need to Solve 62+73-562+73-5 which should get you -359
To answer this question you will find the means and the mean absolute deviations and compare them.
The correct answers are
A and C.
Please see the attached picture for the organized work.
5/7 ÷ 1/3 = 5/7 × 3/1 = 15/7
Answer: The interest is $6384