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Every month, a girl gets An allowance. Assume last year she had no money, and kept all the money she has earned up to now. Then she spends $\frac{1}{2}$ of her money on clothes, then $\frac{1}{3}$ of the remaining money on games, and then $\frac{1}{4}$ of the remaining money on toys. After she bought all of that, she had $7777$ left. Assuming she only gets money by allowance, how much money does she earn every month?

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    work your way backwards. how much money did she have before spending on toys? before spending on games? before spending on clothes? now what is her monthly allowance?2011-02-09
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    why "Interests" in the title?2011-02-10

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