I typically have between $20 and $120 (currently $96). I stop at the ATM and take out $100 whenever my cash drops below $20. I must have gone to the bank recently. =0) Somewhere there's a joke about "burn-a-debt'" (let's see how good your memory is) and the $100, but I can't quite figure it out.
I thought most people rarely carried cash around - guess I was wrong...only a small # said they didn't carry much of any cash.