问题描述：
英语翻译
the amount that Peggy has is twice that of Mike .
还有一句，If 6 times a number mius 9 is 81,the number is...
the amount that Peggy has is twice that of Mike .
还有一句，If 6 times a number mius 9 is 81,the number is...
问题解答：
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