A year ago, Kim Altman purchased $220$ shares of BLK$,$ Inc. for $$39\mathrm{.}00$ on margin. At that time the margin requirement was $30$ percent. If the interest rate on borrowed funds was $7$ percent and she sold the stock for $$47\mathrm{.}00,$ what is the percentage return on the funds she invested in the stock? Round your answer to two decimal places.

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