大虾，再帮帮忙吧~~~ 拜托了~~~~~~
2,A certain multi-national company had 125 employees. Of those employees,40 can speak Franch,60 can speak Russian, and 80 can speak Italian. Within those people,50 can speak 2 languages and 10 can speak 3 languages. Please calculate the number of people who do not speak any of the 3 languages.
3,James can finish project A in 10 days and Adam can finish the same project in 15 days. They started working together on project A the same day, but Adam had been sick for several days. In total, James and Adam spent 8 days on the project. How many days had Adam been sick?(Assume their daily work amount is constant)
4,Two bundle packs of soap sell for as much as five regular packs of soap. During a promotional period, bundle packs are offered at 25% off. If the price of a bundle pack in this period is $1.50 each, then how much does a regular pack of soap ordinarily sell for?
5,In a insurance company, each policy has a paper record and electronic record. For those policies having an incorrect paper record ,50% also have an incorrect electronic record: for those policies having an incorrect electronic record ,80% also have an incorrect paper record. Of all policies, 4% have both an incorrect paper record and incorrect electronic record. If we randomly select one policy, what is the probability that the one selected will have both correct paper and electronic records?
How is your English?
2. 125个工人，40个会说法语，60个会说俄语，80个会说意语，其中50个会说两种语言，10个会说三种语言。计算有多少人三种语言都不会的？
解：设有n个三种评语言都不会说，则有：
（50X2+10X3）+（125-n-50-10）=40+60+80
解得n=15
3. 题意是，J的每天工作速率是1/10，A的工作速率是1/15，
8-（1-8/10）/（1/15）=5天，
A病了5天。
4. 题目意思是：一件商品促销降价25%销售，现在价格是1.5美元，则降价前的价格是：
1.5/（1-0.25）=2美元
你先采纳吧，最后一题我等下再告诉你。来自：求助得到的回答
詹姆斯能在10天内完成项目和亚当能完成相同的项目在15天。他们开始合作项目相同的一天,但亚当病了好几天了。总的来说,詹姆斯和亚当在这个项目上花了8天。有多少天亚当病了么?(假设他们的每天的工作数量常数)
两束包肥皂卖长达五定期包的肥皂。在促销期间,捆包提供25%的价格了。如果一捆包在这个时期是每个1.50美元,然后要多少正规群肥皂通常卖吗?
在保险公司、各项政策有一个纸记录和电子记录。对于那些有一个错误的政策纸记录,50%的人也有一个不正确的电子记录:对于那些有一个不正确的电子记录的政策,80%的人也有一个不正确的纸记录。所有的政策,4%的人都是不正确的和不正确的电子记录纸记录。如果我们随机选择一个政策,什么是一个选择的概率会有正确的纸和电子记录?
