P校给的总花费：Full tuition, room + board + personal expenses (books, activities, etc) = $82,000.
多少的年收入（税前）扣除基本消费，能剩余80K?
Financial Aid和家庭收入的列表,
https://admission.princeton.edu/cost-aid/how-princetons-aid-program-works
| Gross Family Income | Percent Qualified | Average Grant | What It Covers |
|---|---|---|---|
| $0–65,000 | 100% | $77,240 | Full tuition, room + board |
| $65,000–85,000 | 100% | $70,520 | Full tuition, 80% room + board |
| $85,000–100,000 | 100% | $68,180 | Full tuition, 67% room + board |
| $100,000–120,000 | 100% | $65,750 |
Full tuition, 54% room + board????? |
| $120,000–140,000 | 100% | $62,780 | Full tuition, 37% room + board |
|
$140,000–160,000 |
100% | $57,550 | Full tuition, 8% room + board |
|
$160,000–180,000 |
100% | $53,360 | 95% tuition |
|
$180,000–200,000 |
98% | $44,440 | 79% tuition |
|
$200,000–250,000 |
95% | $37,320 | 66% tuition |
|
$250,000 and above |
43% | $28,820 | 51% tuition |