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

admin2011-03-05  61

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?

选项

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-48=48-Y,用这两 个等式,得出X=64。
转载请注明原文地址:https://jikaoti.com/ti/hvlMFFFM
0

最新回复(0)