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A man is 48 years old. He asks the other man how old he is. The other man answer
A man is 48 years old. He asks the other man how old he is. The other man answer
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2024-08-22
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问题
A man is 48 years old. He asks the other man how old he is. The other man answers: "I am twice as old as you were when I was as old as you are today. " How old is the other man?
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答案
64
解析
(假定我现在X岁，当我48岁时，你的年龄是Y岁。因而，X=2Y，X一48=48一Y，用这两个等式，得出x=64。)
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