Math question about Stat

Question

One account increased in value one year by 37% and decreased in value the next year by 37%. Find and the "average rate" of change for the account.

Average Rate =  % (Hint: Use a positive to represent an increase or a negative to represent decrease.)

Answer 1

v represents starting value

1.37v represents value after first year

(0.63)(1.37v), or 0.8631v represents value after second year

The change averaged 0.8631 / 2 per year.

Answer 2