Calculadora de Valor de Bolsa de Estudos — Formula

## How to Estimate Textbook Costs

Textbook expenses depend on courses, books needed, and buying strategy.

### Formula

**Total Cost = Courses x Books per Course x Price x (1 - Discount%)**

### Saving Strategies
- Used books: 30–50% savings
- Rental: 40–60% savings
- Digital/eBook: 20–40% savings
- Library reserves: Free

Exemplo Resolvido

5 courses with 2 books each, average new price $120, buying used at 40% off.

  1. Total books = 5 x 2 = 10
  2. New cost = 10 x $120 = $1,200
  3. Used cost = $1,200 x (1 - 0.40) = $720
  4. Savings = $1,200 - $720 = $480