3. Angela buys into a mutual fund with an initial investment of $15,000 on September 1, 2019. On December 1, her balance is $15,500, and she deposits an additional $6,000. She checks again on March 1, 2020 to see that her balance is $20,000, and withdraws $8,000. Finally she checks again on September 1, 2020 and finds her balance is $14,000, and she withdraws all the money and closes the account. Find her time-weighted yield rate and her approximate dollar-weighted yield rate. Would you say she timed her deposits and withdrawals well?