You want to borrow $24,000 for a tax payment. Your friend offers you a loan, and he claims that he will only charge you 10% interest. He calculates that the total interest of the loan will be $24,000 3 10% 5 $2,400, so he deducts this amount from the loan, gives you $21,600, and tells you to repay $24,000 in one year. Has your friend charged you 10% interest? What is the real interest rate charged on the loan?