economics question

4) Suppose Ford sells cars in Canada and the US. The inverse demand for cars in Canada is: pi(y1) = 20,000 - 20y1 The inverse demand for cars in the US is: Pr(yz) = 25,000 - 10y2 The cost for Ford of producing cars is given by: c(y) = 500, 000 + 20yz a) How many cars will Ford sell in Canada and at what price? How many cars will Ford sell in the US and at what price? b) What will Ford's profits be