Alla is cosidering refinancing her mortgage. She currently has 180 payments of $2,300 left on her fully amortizing loan The bank is offering Alla a new fully amortizing mortgage for 15 years (also 180 payments) at a lower interest rate so that her monthly payments will be $2,045. The costs of refinancing are $24,000. What is the Alla's IRR for this refinancing option if she intends to stay in the house until the mortgage matures? State your answer as a percent number rounded to two decimal points ( .9. if your answer is 10.466%, write 10.47) Hint: don't forget to multiply your monthly rate by 12 and format your answer to get two decimal points