help with 6 please!

6. Some companies cross-list their shares, meaning that their stock trades on more than one stock exchange. For example, Restaurant Brands International (QSR), the parent company of Burger King and Tim Hortons, trades on both the Toronto Stock Exchange and NYSE. If its price in Toronto is 50 Canadian dollars per share and any one can exchange Canadian dollars for U.S. dollars at the rate of US$0.85 per C$1.00, what must QSR's price be on NYSE