**DOMESTIC
ECONOMY.— solution**

Without the hint that I gave, my readers would probably have been unanimous
in deciding that Mr. Perkins's income must have been £1,710. But this is quite
wrong. Mrs. Perkins says, "We have spent a third of his yearly income in rent,"
etc., etc.—that is, in two years they have spent an amount in rent, etc., equal
to one-third of his yearly income. Note that she does *not* say that they
have spent *each year* this sum, whatever it is, but that *during the two
years* that amount has been spent. The only possible answer, according to the
exact reading of her words, is, therefore, that his income was £180 per annum.
Thus the amount spent in two years, during which his income has amounted to
£360, will be £60 in rent, etc., £90 in domestic expenses, £20 in other ways,
leaving the balance of £190 in the bank as stated.

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