A manufacturer of skis produces 2 types: downhill and cross country. Times for manufacturing each ski are given Manufacturing each ski: Downhill 3 hours Cross Country 2.5 hrs Finishing time per ski: Downhill 0.5 hours Cross Country 0.5 hours The maximum total weekly hours available for manufacturing and finishing the skis are 102 hrs. and 19 hrs respectively. The profits per ski are $80 downhill and $90 cross country. Determine how many of each kind of ski should be produced to achieve a maximum profit.