If the current exchange rate is $1.75/, the 1-year forward exchange rate is $1.85/, and the interest

Question:

If the current exchange rate is $1.75/£, the 1-year forward exchange rate is $1.85/£, and the interest rate on British government bills is 8% per year, what risk-free dollar-denominated return can be locked in by investing in the British bills?

Exchange Rate
The value of one currency for the purpose of conversion to another. Exchange Rate means on any day, for purposes of determining the Dollar Equivalent of any currency other than Dollars, the rate at which such currency may be exchanged into Dollars...