33-36: NET CASH FLOW. The following tables show expenses and income for various individuals. Find each person's net monthly cash flow (it may be negative or positive). Assume that amounts shown for salaries and wages are after taxes and that 1 month = 4 weeks. 1 month 4 weeks. 33. Income Expenses Part-time job: Rent: $500/month $650/month College fund from grandparents: Groceries: $60/week Tuition and fees: $3600 twice a $400/month Scholarship: year $6000/year Incidentals: $120/week