数学问题，大家讨论•••

静雯 · 发表于 18-4-2011 15:10:10|来自：新加坡

回复 frekiwang 的帖子

Could you correct your type error here or type your problem again?

Thanks.

痛过的人 · 发表于 18-4-2011 21:28:44|来自：新加坡

回复静雯的帖子

Thank you very much..

飞跃漂流 · 发表于 19-4-2011 06:51:29|来自：新加坡

建议大家在提出问题时注明题目的年级，以便别人参考。谢谢！

静雯 · 发表于 19-4-2011 10:24:02|来自：新加坡

本帖最后由静雯于 19-4-2011 10:25 编辑

回复 frekiwang 的帖子

You've corrected your problem.

Thanks.

欢迎好运 · 发表于 5-6-2011 19:51:13|来自：新加坡

我女儿的数学问题，第一道：
Three boys,Aron,ben and charlie shared the cost of a birthday present for their father on his birthday.
The ratio of Aron's share to the total of Ben's and Charlie's share was 1:3.
The ratio of Ben's share to the total of Aron's and Charlie's shares was 1:5
Charlie paid $50 more than Ben. Fine the cost of the present .

第二道：
Susanne spent $42 on an equal number of drinks and chicken wings. Four drinks cost as much as 3 chicken wings.
Five drinks cost $2.80 more than 2 chicken wings.
How many chicken wings did she buy ?
请帮忙解答，谢谢先！.

陪读娘娘 · 发表于 5-6-2011 20:09:14|来自：新加坡

本帖最后由陪读娘娘于 5-6-2011 21:06 编辑

1,=120

a：b+c=1:3

b: a+c=1:5

1:3=1:5
3:9=2:10

a+c=10u
c=10u-3u=7u
b=2u
50=(7u-2u)
u=10
12u=120

陪读娘娘 · 发表于 5-6-2011 20:23:05|来自：新加坡

本帖最后由陪读娘娘于 5-6-2011 20:25 编辑

2=15

42除以2.8 等于15。。。

画图可以看出来一个鸡翅和一个饮料加起来的价钱是2.8 。。。

欢迎好运 · 发表于 5-6-2011 23:16:06|来自：新加坡

谢谢娘娘！:hug:

欢迎好运 · 发表于 5-6-2011 23:50:05|来自：新加坡

谢谢娘娘！:hug:

欢迎好运 · 发表于 6-6-2011 00:14:10|来自：新加坡

Xavier,Yati and Zul each had a certain number of stickers.At first,Yati had 200 stamps more than Xavier and Zul had 3/4 the number of stamps Y at had.After Yati gave away 1/8 of her stamps to Xavier,she had 60 fewer stamps than Xavier.What was the ratio of number of stamps Xavier had to number of stamps Yati had to number of stamps Zul had at first?Give your answer in the simplest form.
我的解题如下：
200+60=260
260除以1/8=2080
4u=2080
1u=520
3u=1560
2080-200=1880
1880：2080：1560
=47：52：39

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