wd369

有2道 GEP P4 SA2的数学考题(来源: http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=67&t=25121 ), 大家看看难度如何

1.  In a group of children, the mean age of the children is 10 years. If the mean age of the 8 boys was 15 years, the mean age of the girls was 6 years. How many children were there altogether?

2. 44 boys and 47 girls want to school camp. The pupils were put into groups. There was an equal no. Of pupils in each group. The number of groups is larger than the number of pupils in each group.
A) how many groups were there?

In each group, the no of boys was 1 more or1 less than the no of girls,
B) how many groups had more girls than boys?

vivocity2010

去不去在你自己的考虑！
但不去是损失是肯定的！

乐陶陶

这个问题，在gep没发通知的时候我就提醒过大家，看好自己的名次，不要失去择校的主动权

lz你的短信我回了，目前你的这种情况比较被动，所以我给你提的方法也比较特别，你看看想想吧，其实为了孩子可以试下

乐陶陶

忽然想起来，在提醒lz一句，去moe不要怕这怕那，记住一点，你的孩子是gep得主，他们moe得捧着你，有什么要求强硬的直接提出，只要不偏题，他们都会满足你的。

yishun2009

wd369 发表于 4-12-2011 15:12
有2道 GEP P4 SA2的数学考题(来源: http://www.kiasuparents.com/kiasu/forum/viewtopic.php?f=67&t=25121  ...

1。18 pupils
2-1。7 groups
2-2。5 groups

对不对？

wd369

yishun2009 发表于 8-12-2011 14:27
1。18 pupils
2-1。7 groups
2-2。5 groups

你解答得正确. 只是看了K论坛上解法,应该第2道贴出来的试题内容不全,导致2种答案.  所以加了一句(The number of groups is larger than the number of pupils in each group. )限制一下.


MathIzzzFun:

some information is missing.. for eg. For A) it can be either 7 groups of 13 children or 13 groups of 7 children

B) For 13 groups with 7 children each, each group will have either 4 boys/3 girls or 3 boys/4 girls

44 boys --> 44/13 = 3R5. So, there are 5 groups with 4 boys/3 girls and 8 groups with 3 boys/4 girls ie 8 groups with more girls.

For 7 groups with 13 children each, each group will have either 7 boys/6 girls or 6 boys/7 girls.

44 boys --> 44/7 = 6R2. So, there are 2 groups with 7 boys/6 girls and 5 groups with 6 boys/7 girls ie 5 groups with more girls.

cheers.

Last edited by MathIzzzFun on Wed Oct 12, 2011 10:15 pm, edited 3 times in total.

yishun2009

当时我也意识到可能有两种答案，当7组成立时，就没想那13组的具体情况。看来我可以上GEP班了，赞！

lelei

LZ，我儿子和同学也面临同样问题。他的同学选择退出GEP，我儿子决定去上GEP班。虽然对那个GEP学校不是很满意，还是先上一段时间看孩子适应与否，喜欢与否吧。我儿子求知欲很强，现在邻里学校的老师没时间回应他提出的问题。GEP班的老师应该会好些吧。

刘皮皮

wd369 发表于 8-12-2011 15:26
你解答得正确. 只是看了K论坛上解法,应该第2道贴出来的试题内容不全,导致2种答案.  所以加了一句(The num ...

哇, 这位版亲, 你对gep的东东了解的很多呀, 有什么更多经验吗, 对帮助准备gep的?

jjrchome

lelei 发表于 19-12-2011 09:03
LZ，我儿子和同学也面临同样问题。他的同学选择退出GEP，我儿子决定去上GEP班。虽然对那个GEP学校不是很满 ...

楼主的孩子已经在几天前通过教育部成功地转到了心仪的GEP学校。.

美满的结局！