Quote:
Originally Posted by HalpMeh
Do you mean like filtering it?
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I like Razor's idea, but I'm not sure if it would work with dollar bills or not. But I think it would work with coins. How about this? You take a bunch of coins, and mix it up with some water (perhaps keep it overnight), then pour the water through the filter (like Razor said), and see how much dirt is left.
Also, can you be more specific on your project? Like are you comparing amounts of dirt on different kinds of coins? Or are you asking a question, in general, how dirty is our money?