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?CA.32 B.48 C.64 D.802.A rancher is building an open-ended(strai
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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?CA.32 B.48 C.64 D.802.A rancher is building an open-ended(strai
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
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?CA.32 B.48 C.64 D.802.A rancher is building an open-ended(strai
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.
post在这里做名词，表示柱子、桩、杆等
e.g: The notice was nailed to a post.
布告钉在一根柱子上。
1.一个48岁的男人问另一个人你多大，这个人回答：“当我像你现在一样大时，我比你大一倍(指我48时你24)”。 问另一个人多大？
2.一个农场工人正在修建一个篱笆，使用25米长的线。如果篱笆场100米，要使用多少根线？
1.我现在的年龄是当我和你现在的年龄一样时你的年龄的二倍，即当我48岁时你的年龄的二倍就是我现在的年龄，设所求的年龄为(48+n).则48+n=2(48-n).n=16,所以是64岁。2电线杆，两杆距离25米，那5条就有4个间距25*4.