John borrows 10,000 for 10 years at an annual effective interest rate of i. He accumulates the amount necessary to repay the loan by using a sinking fund. he makes 10 payments of X at the end of each year, which includes interest on the loan and the payment into the sinking fund, which earns an annual effective rate of 8%. If the annual effective rate of the loan had been 2i, his total annual payment would have been 1.5X. Calculate i.