A mail order company accepts payments in installments. If you pay for a rug in one installment, it will cost you [[$ 250 $]] QAR. You can also pay it in twelve installments, bringing the monthly fee to [[$ 25 $]] QAR. By what percentage will the rug become more expensive if it is paid in installments?



When paying in installments, the rug is [[$ \% $]] more expensive.