Cooking versus buying lunch.
A worked example
Starting figures
- Bought lunch
- $13.50
- Homemade cost
- $4.20
- Days per week
- 5
What it returns
- Yearly saving
- $2,418
- Weekly saving
- $46.5
- Bought lunches per year
- $3,510
- Over five years
- $12,090
How to read the results
With the defaults above, yearly saving works out at $2,418.