Charles appears to be getting shortchanged on his salary. He receives $50 as a stopgap measure, which he promptly pays to Rizzo (still owing the original $50). When the full payroll arrives, Charles pays Rizzo $150 in interest, and then has to pay him his final $50 to clear the debt completely. This is a grand total of $250 dollars. Margaret, as a major, gets $400 a month. Surely Charles would get at least that much, and probably more, being both a doctor and a member of the male persuasion.