In my experience, many cashiers can not make change without the register telling them the amount to give back.
The other day I had $10.37 in groceries at a convenience store and gave the clerk a $20 and a $1, wanting a $10 bill and change back. She could not figure it out.
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Our most important survival tool is our brain, and for many, that tool is way underused! SBRaider
Head Cat Herder