For bonds, assume coupons paid semi-annually, coupon rates and yields quoted with semi-annual compounding, and redeemable at par unless otherwise noted (Ignore it if it's not relevant to the question).

Andy borrows $15,000 for 10 years at an annual effective interest rate of 9%. Andy can repay this loan using the amortization method with payments of P at the end of each year. Instead, Andy repays the loan using a sinking fund that pays an annual effective rate of 10%. The deposits to the sinking fund are equal to P minus the interest on the loan and are made at the end of each year for 10 years. Determine the balance in the sinking fund immediately after the repayment of the loan.