After all our summer trips I buckled down last weekend and did some budgetting and I’ve realized I have to update the spreadsheet in my head. Here’s how much things cost in my outdated DaveBrain 2000 operating system: Fast food -$5/person = $20/family Snacks - $2.50/person = $10/family That –as my bank account is telling me– is super incorrect. The real numbers are much more like: Fast food - $12.50~$15/person = $50~$60/family Snacks - $5~$7.50/person = $20~$30/family And groceries ha...