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The Foolish Things People Do For A Sexy Maths Tutor

At the Chinatown market last night, a stall keeper sold me two jars of pineapple tarts at the same price. He claimed that, while he made a profit of 20% on one of them, he also made a loss of 20% on the other - hence he "didn't make any money from me". Was he telling the truth?

 

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