It is often difficult for a man to be quite sure how much tax he ought to pay to the government because it depends on so many different things：whether the man is married;how many children he has;whether he supports any relations，how much interest he receives，how much he has spent on his house during the year，and so on. All this makes it difficult to decide exactly how much the tax is.There was an artist who was always very careful to pay the proper amount.

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