A manufacturer of skis produces 2 types; downhill and cross-country. The times required for manufacturing and finishing each ski are given Manufacturing time per downhill ski 2hrs Cross-country ski 1.5 hrs Finishing time per ski ; downhill 0.5 hour Cross-county 1 hour The maximum total weekly hours available for manufacturing and finishing the skis are 84 hours and 36 hours , respectively. The profits per ski are $90 for downhill and $60 for cross-country. Determine how many of each kind of ski should be produced to achieve a maximum profit. ? Downhill ? Cross-country