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用英语做数学趣味题

On her breakfast tray, Aunt Lily had a little vase of flowers--a mixture of primroses and celandines. She counted up the petals and found there were 39. "Oh, how lovely!" she said, "exactly my age; and the total number of flowers is exactly your age, Rose!"
How old is Rose?

Primroses have five petals on each flower.
Celandines have eight petals on each flower..

39＝3×8＋5×3
所以rose的年龄为3+3＝6岁。.

On her breakfast tray, Aunt Lily had a little vase of flowers--a mixture of primroses and celandines. She counted up the petals and found there were 39. "Oh, how lovely!" she said, "exactly my age; and the total number of flowers is exactly your age, Rose!"
How old is Rose?

Primroses have five petals on each flower.
Celandines have eight petals on each flower.

这篇文章的大概内容为
      舅妈Lily有一个花瓶，里面有一些樱花与白屈菜。Lily把这些花的花瓣数加起来，为39。舅妈说：“花瓣数正好是我的年龄，而且花朵数正好是Rose的年龄。”

      樱花有5片花瓣，白屈菜有8片花瓣。.

Sorry，上帖忘了翻译问题了！！！
  
      问Rose几岁了？.

回复 4#dayan888 的帖子

答案正确，谢谢翻译！我来用英语把做的过程说一遍。

The way to figure this out is to start at the end with 39 petals. and remember that the primroses must provide either 5 petals or 10 or 15 or 20 or 30-a multiple of 5. Now suppose there was only one celandine (8 petals); that would leave 31 petals (39-8=31). The rest can't be primroses, because 31 is not an exact multiple of 5. Suppose there were two celandines; that would make 16 petals, leaving 23. No good! Three celandines=24 petals, and 39-24=15 petals. Bingo! The answer must be 3 celandines and 3 primroses. Check: 3x8=24 and 3x5=15, and 24+15=39. So Rose is (3+3), or 6.

Is this clear enough?

又学英语又学数学。.

I really taste it as it reminded me of my college life as our maths, physics and chemistry were delivered in English at that time! Mechanical drawing and EE were taught in English also. But unfortunately I forgot most of the staff taught then.  Claire.

给个好评！:D 尽管不大懂。:L.

[quote]原帖由 [i]不二周助[/i] 于 2007-10-5 09:49 发表 [url=http://ww123.net/baby/redirect.php?goto=findpost&pid=2089352&ptid=4463330][img]http://ww123.net/baby/images/common/back.gif[/img][/url]
答案正确，谢谢翻译！我来用英语把做的过程说一遍。

Clear enough!:lol.

回复 5#不二周助 的帖子

呵呵～厉害哦～
大概是成人…….

thank.

回复 10#ANGELA12 的帖子

光讲thank？通吗？:o.

先撒花再动脑筋。.

回复 11#H爸 的帖子

你觉得是英文难还是计算难？.

回复 12#vivianda 的帖子

这是啥时候的贴啊。那时孩子还小，天天饶有兴趣地找些有趣的题目一起研究。现在已经基本不管了，所有功课都独立学习。特别是英语，从某种意义上说，是完全超过我的水平了。
看到这贴，回想当时，觉得作为妈妈，我还是很努力的。自己表扬自己，嘿嘿。.

回复 14#不二周助 的帖子

刚看到是07年的帖。真好！这样的小题复习了英文又开动了脑筋，作为孩子妈，你很尽职也有办法呀！PFPF[attach]315145[/attach].

回复 15#vivianda 的帖子

我也在这里跟着大家学了很多。.

[quote]原帖由 [i]H爸[/i] 于 2009-5-31 17:08 发表 [url=http://ww123.net/baby/redirect.php?goto=findpost&pid=5173571&ptid=4463330][img]http://ww123.net/baby/images/common/back.gif[/img][/url]
光讲thank？通吗？:o [/quote]
呵呵　ＴＨＡＮＫＳ.

Sue invited 4 friends to go with her to  the movies;There are 120 different ways in which they can sit together in a  row.In how many of those ways is Sue siting in the middle?.

*** 该贴被屏蔽 ***

有意思，能再贴一些吗？.