How to calculate IRR and IRP in this question? The answer is 7% in the end, but I do not know how to get it.

Consider the situation of firm A and firm B. The current exchange rate is $1.50/. Firm A is a U.S. MNC and wants to borrow 40 million for 2 years. Firm B is a French MNC and wants to borrow $60 million for 2 years. Their borrowing opportunities are as shown; both firms have AAA credit ratings. A B $ $ 7% $8% 6% 5% If firm B could use the forward exchange markets to redenominate a 2-year 40m 5 percent euro loan into a 2-year USD-denominated loan, what would be the interest rate? Consider the situation of firm A and firm B. The current exchange rate is $1.50/. Firm A is a U.S. MNC and wants to borrow 40 million for 2 years. Firm B is a French MNC and wants to borrow $60 million for 2 years. Their borrowing opportunities are as shown; both firms have AAA credit ratings. A B $ $ 7% $8% 6% 5% If firm B could use the forward exchange markets to redenominate a 2-year 40m 5 percent euro loan into a 2-year USD-denominated loan, what would be the interest rate