One year ago, stock X was trading at a split$-$adjusted price of $$88\mathrm{.}95$ per share. Assume a year

ago, you had the opportunity to buy or sell short $100$ shares using a $60\%$ margin account. Based

on the closing price of $$108\mathrm{.}33$ today determine what strategy would make you the most money.

Calculate the HPR of that strategy based on the closing price. Assume commissions are $$10$ each

way and the borrowing rate is $6\%$ a year with monthly compounding.

I believe the answer is $31\mathrm{.}95\%$ but I am unsure of how to calculate it