The spot exchange rate in New York is $1.50 per British pound. The 1 yr forward exchange rate is $1.550 dollars per pound. The one year interest rate in Great Britain is 2.5% while the one year interst rate in the U.S. 4.5%. If the interst rate in Great Britain remains 2.5%, what should the interest rate be in the U.S. according to the interest rate parity theory?