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求助一道PREP数学
Alice's take-home pay last year was the same each month,and she saved the same fraction of her take-home pay each month.The total amount of money that she had saved at the end of the year was 3 times the amount of that portion of her monthly take-home pay that she did not save.If all the money that she saved last year was____?
答案是五分之一...题目看似简单但完全不知道怎么出来答案的=.= |
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