BOX 3: Take the following information as true The residents of a residence hall can be classified as involved in a relationship, not involved in a relationship but looking, or 'discouraged' (i.e. concentrating on their studies). Among involved people, 10% experience a break-up every month and become not involved but looking. Among those not involved but looking, 5% enter into a relationship every month. 1/3 of the residence hall is permanently discouraged. 4. Refer to Box 3. What is the steady state fraction of the residence hall which is involved? (a) 1/20 (b) 1/10 (c) 2/9 (d) 1/3 (e) 1/2 (f) 4/9 (g) 2/3