/. Due to the strong value of the Swiss franc, Swiss ski areas have had to reduce the prices they charge for lift tickets to try and attract foreign tourists to their resorts. Last season, the average price of a day of skiing fell from 50 CHF to 45 CHF. At the same time, sales of ski equipment in Switzerland increased 7%. Calculate, interpret and explain the XED for ski lift tickets and skis in Switzerland. 8. Migros, a large Swiss grocery chain, saw the sale of its "M-Budget" brand toilet paper increase by 22% in 2009, while the per capita income in Switzerland fell due to recession by 2%. Calculate, interpret and explain the YED for M-Budget toilet paper in Switzerland