Sumathi consumes coffee (x) and sugar (y). Her utility function is u = min(x, y).

Sumathi is living in Thanjavur where prices are Rs 4 and Rs 4, respectively, while her

weekly income is Rs 24. Her boss wants to send her to Chennai, where the prices are

Rs 9 and Rs 4, respectively. Sumathi complains bitterly. According to her, having to

move is as bad as cut in salary of Rs A. She also says she wouldn't mind moving if her

boss raises the salary by Rs B. What are A and B equal to?