Do Not Pay Any Less, Mrs Mess Puzzle

The Puzzle:

Do Not Pay Any Less, Mrs Mess
Mrs Mess was buying a set of garden furniture. The bill was seventy dollars.

She gave the attendant what she thought were two $50 notes, (actually two $100 notes).

The attendant was sleepy and didn't notice either, so he gave Mrs Mess what he thought were three $10 notes (actually three $50 notes).

Who ended up better off than they should?



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-\./^\./-


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