two employees, Meg and Wesley, each of whom works for 10 hours a day. Meg can knit 5.6 mittens in an hour. Meg can knit 2 scarves in an hour. Wesley can knit 1.2 mittens in an hour. Wesley can knit 1 scarf in an hour. If they are efficiently knitting 13 scarves a day, what is the opportunity cost, in terms of mittens per day, of producing an extra scarf each day