In the answer to question 27, it states: “By covered interest parity, the cost of hedging a bond into a particular currency is the short-term (six months here) rate for the currency into which the bond is hedged minus the short-term rate for the currency in which the bond is denominated.”

They then take the 6 months rates, calculated the difference and then divide the answer by 2.

Ex.: (6 months euro - 6 months usd) / 2, for the usd bond hedged into euro.

Why are they dividing it by 2? As I understand it, the rates are already the 6 months rates and not the BEY nor the rate quoted on a 1 year basis. Also, the holding period is 6 months.