2. 外语
  3. A, B, C, D, E are five real numbers. A is 50％ greater than B. B is 20％ less than C. C is 2 times as D. D is 3 greater than E. If

A, B, C, D, E are five real numbers. A is 50％ greater than B. B is 20％ less than C. C is 2 times as D. D is 3 greater than E. If

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问题 A, B, C, D, E are five real numbers. A is 50％ greater than B. B is 20％ less than C. C is 2 times as D. D is 3 greater than E. If E = 2, then what is the value of A?
选项
答案12
解析 根据题目可以得出：A=(1+50％)B；B=(1-20％)C；C=2D；D=E+3；E=2。所以，A=12。
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