A dealer bought an article for $7, sold it for $8, bought it
back for $9, and sold it for $10. How much profit did he
The amazing thing about this puzzle is that people always
seem to fight over the answer! Yes, different people work it
out in different ways and come up with different answers,
and each insists his answer is correct.
@ Muffy, I hope this is not a repost.
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