孙明、张红、李强三人的总钱数是14.2元,孙明、张红的总钱数是8.9元,而孙明、李强的总钱数是9.4元.他们三人各有多少

3*5=15,7月15日一起

I and Olympic Games
Olympic Games is window,I keep watch.This is a maximum window,had been rubbed bright.Through it,those that see are worlds.Here,it is changing every day,here burgeoning thing is being replaced.Have only me,this loyalty keep watch,it is paying attention to it every day,hopes to know it more.Olympic Games is crossing,I am pedestrian.There are many persons who pass here every day,there is Asian,have European,there is old person,have child.Here is traffic fort,joins the friend of all corners of the country.I pass the one of persons of hundreds of millions of here merely,cross it,go to another world.Olympic Games is Holy Land,I am volunteer.This is the land with pure flat,has holy fire from start to finish to accompany in side.Just because it is so,I pay out voluntarily for it,I will let my strength,let this slice of land more clean,let more ones know it,is also willing to devote oneself to it as me.I still help to the person who comes to here,let them enjoy the happiness of this slice of Holy Land.Olympic Games is platform,I am host.It has put up platform for us ,lets world know us; It has built bridge for us ,lets us and world link up better.This platform may let us display self wantonly.I am the host of here,I am proud to be the host of here.I will let the friendship of landlord,let guest experience enthusiasm and happiness.
我与奥运
奥运是窗口,我是守望者.
这是一扇极大的窗,被擦得明亮.透过它,看到的是世界.这里每天都在变,这里每天都有新兴事物在更替.只有我,这个忠诚的守望者,每天都在关注它,希望更多地了解它.
奥运是路口,我是行人.
每天路过这里的人很多,有亚洲人、有欧洲人,有老人、有孩子.这儿是交通要塞,连接着五湖四海的朋友.我只是路过这里的亿万人之一,穿过它,到另一个世界去.
奥运是圣地,我是志愿者.
这是片圣洁的土地,自始至终都有圣火在旁边陪伴.正因为这样,我自愿为它付出,我要尽我的力量让这片土地更加洁净,让更多人了解它,也像我一样愿意献身于它.我还要给来这里的人予以帮助,让他们享受这片圣地的快乐.
奥运是平台,我是主人.
它为我们搭起了平台,让世界了解我们；它为我们建造了桥梁,让我们与世界更好地沟通.这个平台可以让我们尽情展现自己.我是这里的主人,我为是这里的主人自豪.我要尽地主之谊,让来客感受到热情与欢乐.

李伟，孙明—分钟做六点几题，而李伟七点几题，望采纳

设上山的路程是 x 千米,则下山的路程是 5-x 千米.
可列方程：x/1.5+(15-x)/4 = 5 ,
解得：x = 3 ,可得：15-x = 12 ,
即：上山的路程是 3 千米,则下山的路程是 12 千米.

20÷3=20/3=80/12
29÷4=29/4=87/12
80/12＜87/12
李伟快

Dear WangYong:
I have been here for 2 weeks already.I miss you very much.How is everything go with you?
I am having vacation with my parent in England.I live in a partment in my uncle's hometwon.Here is very quiet and paceful.Everybody lives here is very friendly to us.I visited London and Cambridge University.I can not describe it use a few words.It is grateful!I hope I will come here to study.
It is a very exciting travelling.I am very enjoy it.And I hope we can go together next time.I have to stop my writing here,but do not forget write back for me.
yours SunMing

设上山的路程是 x 千米,则下山的路程是 5-x 千米,
可列方程：x/1.5+(15-x)/4 = 5 ,
解得：x = 3 ,可得：15-x = 12 ,
即：上山的路程是 3 千米,则下山的路程是 12 千米.

1. 2.16/72=3%

设孙明平均每分钟清点图书x本．
根据题意得：[200/x＝
300
x+10]．
解这个方程得：x=20．
经检验：x=20是原方程的解．
答：孙明平均每分钟清点图书20本．

Imagine that you are Sun Ming and you spent the summer on vacation in England with your parents.You had promised your thoughts with a close friend Wang Yong.Please write him a note (about 100 words) in English,telling him that you have visited London and Cambridge,your feelings about those places and when you will be returning from England.

已经回答了、、、

他做对了X道题,
10X-2(12-X)=72
12X=96
X=8
他做对了8道题,错了4道

无数个