On: How many hours of work does that purchase cost?

[bunderbunder]

how much would that $20 purchase net you over an invested lifetime

$27

(Assumptions: You save it at age 20, it grows at 5%, and you spend it when you're 80.)

[sparky → bunderbunder]

$373.58? $27 assumes a 0.5% return.

[bunderbunder → sparky]

Ugh, you're right. That was embarrassing.

[tomjen3 → bunderbunder]

Where do you get a five percent return on investment?