英语翻译1.A man is 48 years old.He asks the other man how old he

问题描述：

英语翻译
1.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?C
A.32 B.48 C.64 D.80
2.A rancher is building an open-ended(straight)fence by string wire between posts 25m apart.If the fence is 100m long,how many posts should the rancher use?D
A.2 B.3 C.4 D.5

1个回答分类：英语 2014-11-30

问题解答：

我来补答

post是柱子的意思～
=== 第一题我解释不清楚给你google了下
Let x = my age,
y = your age
The age difference always remains constant therefore I will always be x-y years older than you.
When I was your age,i.e my age was "y" years,your age will be y - (x-y) = 2y-x years.
But at that time i was twice as old as you.i.e,y = 2*(2y - x)
=> y = 4y - 2x
=> 3y = 2x
Or my age = 1.5 * your age.

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