The student has the choice of breakfast menu (eggs, cereals, tarts) and the limited ($10) budget to fulfill his/her nutrition requirements (1000 calories, 100 g protein) at minimum cost. Eggs give 500 calories and 50g protein and cost $3.50; cereals give 500 calories and 40g protein and cost $3; tarts give 600 calories and 20g protein and cost $2. How does he/she select his/her breakfast mix?