Principal of $259 000 on a house is mortgaged at a rate of 3.7% amortized over a period of 25 years resulting into a total interest of $137 178.49.The bank also offers simple interest for the customers,who do not want to pay compound interest.If bank wishes to earn the same amount of interest over the period of 25 years,what rate will the bank charge to its customers,if the loan is paid in equal annual installments?