if 55 percent of a group of people have brown hair and 80 percent of the same group do not have red hair,what fraction of those who do not have brown hair have red hair?A.四分之一B.十一分之四C.九分之四D.九分之五E.五分之四

three grades of milk are 1percent,2percent,3percent fat by volume,if x gallon of 1 percent,y gallon of 2percent and z gallon of 3percent are mixed to give x+y+z gallons of a 1.5percent grade ,what is x in terms of y and 英语版化学题A mass of 43.3 tetraphosphorus hexoxide,P4O6 is actually formed when 75.3g of phosphorus,P4,react with 38.7g of oxygen gas,O2 if theoretical yield for this reaction is 88.7g of tetraphosphorus hexoxide,what is the percent yield for 一道gre数学题By weight,liquid A makes up 7.0 percent of solution 1 and 14.5 percent of solution 2.If 3grams of solution 1 is mixed with 2 grams of soluiton 2,then liquid A account for what percent what percent of the weight of the resulting solu if 55 percent of a group of people have brown hair and 80 percent of the same group do not have red hair,what fraction of those who do not have brown hair have red hair?A.四分之一B.十一分之四C.九分之四D.九分之五E.五分之四 If there are 18 boys and 12 girls in a class,what percent of the class is girls? GRE数学题 a percent of b percent of c9.7 gre数学考题 a percent of b percent of c 是多少 abc/10000 英语翻译【If 2 percent of a 12-gallon solution is sodium,how many gallons of pure sodium must be added to make a new solution that is 6 percent sodium?】请翻译上面【】裏面的内容, 英语单词Percent用法Twenty percent of the students exercise for 4-6 times a week 中的percent为什么是单数. gmat数学题In a corporation,50 percent of the male employees and 40 percent of the female employees are at least 35 years old.If 42 percent of all the employees are at least 35 years old,what fraction of the employees in the corporation are females Sat数学题求解释和过程At a department store,3/5of the items are discounted by 50 percent, 1/5of the items are discounted by 70 percent, 1/10 of the items are discounted by 80 percent, and all other items are not discounted. If one item is to This is ten percent luck,　　Twenty percent skill 　　Fifteen percent concentrated power of will 　　Five percent pleasure,　　Fifty percent pain 　　And a hundred percent reason to remember the name! This is ten percent luck,Twenty percent skill,Fifteen percent concentrated power of will,Five percent pleasure,Fifty percent pain,And a hundred percent reason to remember the name什么意思? 请求翻译一下这段话It's just ten percent luckTwenty percent skillFifteen percent concentrated power of willFive percent pleasureFifty percent painAnd a hundred percent reason to remember the name gre A car dealer who gives a customer a 20 percent discount on the list price of a car still realizes a net profit of 25 percent of cost.If the dealers' cost is $4800,what is the usual list price of the car? 英语翻译1、The UK market for organic food grew by 55 percent in 2000,while the food market as a whole grew by only one percent.Yet only seven percent of British shoppers account for nearly 60 percent of organic sales.However popular the idea of 翻译：unemployment at a five-year high of 6.1 percent. a quarter of one percent是0.25%吗 three-tenths of a percent是多少?最好说明怎么看!