题库搜索>数据充分DS-17774
建议使用官方纸质指南，查看对照完整题目
All trainees in a certain aviator training program must take both a written test and a flight test. If 70 percent of the trainees passed the written test, and 80 percent of the trainees passed the flight test, what percent of the trainees passed both tests?
(1)10 percent of the trainees did not pass either test.
(2)20 percent of the trainees passed only the flight test.
分析A选项
分析B选项
分析C选项
分析D选项
分析E选项
我有更好的解析 
暂无雷哥网文字解析
（1）Did not pass either test,说明是两个都没有pass。
10%的两个都没过，则剩下90%是至少过了一个和两个都过的和。
70%+80%=150 150%-90%=60%就是两个都过的概率
（2）20%的只过了f,则，80-20=60是两个都过的概率
小良冠二郎
条件1: 0.7 + 0.8 +0.1 - ab = 1. 条件2: 0.7 + （0.2 + ab） + x - ab = 0.8.
0
0
回复
2023-05-09 15:35:21
185945nkgi
居然没想到第二个 对自己无语
0
0
回复
2022-10-05 21:54:23
科目：
数据充分DS
来源：
难题300
题目信息1m54s
平均耗时
76%
平均正确率
该题由网友aCk1V32X提供
点击上传数据充分DS -17950
Alan and Sue have each been saving one dollar a day and will continue to do so for the next month. If Sue began saving several days before Alan, in how many days from today will Alan have saved one-half as much as Sue?(1)As of today, Alan has saved 7 dollars and Sue has saved 27 dollars.(2)Thr...
数据充分DS -17868
Tami purchased several identically priced metal frames and several identically priced wooden frames for a total pretax price of $144. What was the total pretax price of the metal frames that Tami purchased?(1)The price of each metal frame was 60% greater than the price of each wooden frame.(2)...
数据充分DS -17799
A large flower arrangement contains 3 types of flowers: carnations, lilies, and roses. Of all the flowers in the arrangement, 1/2 are carnations. 1/3 are lilies and 1/ 6 are roses. The total price of which of the 3 types of flowers in the arrangement is the greatest?(1) The prices per flower for car...
数据充分DS -17797
State X has a sales tax rate of k percent on all purchases and State Y has a sales tax rate of n percent on all purchases. What is the value of k-n?(1)The sales tax on a $15 purchase is 30 cents more in State X than in State Y.(2)The sales tax rate in State X is 1.4 times the sales tax rate in State...
数据充分DS -17796
A novelist pays her agent 15% of the royalties she receives from her novels. She pays her publicist 5% of the royalties, plus a yearly fee. Did the novelist pay more to her agent last year than she paid to her publicist?（1）The publicist' s yearly fee is $2,000（2）The novelist earned an av...
数据充分DS -17950
Alan and Sue have each been saving one dollar a day and will continue to do so for the next month. If Sue began saving several days before Alan, in how many days from today will Alan have saved one-half as much as Sue?(1)As of today, Alan has saved 7 dollars and Sue has saved 27 dollars.(2)Thr...
数据充分DS -17868
Tami purchased several identically priced metal frames and several identically priced wooden frames for a total pretax price of $144. What was the total pretax price of the metal frames that Tami purchased?(1)The price of each metal frame was 60% greater than the price of each wooden frame.(2)...
数据充分DS -17799
A large flower arrangement contains 3 types of flowers: carnations, lilies, and roses. Of all the flowers in the arrangement, 1/2 are carnations. 1/3 are lilies and 1/ 6 are roses. The total price of which of the 3 types of flowers in the arrangement is the greatest?(1) The prices per flower for car...
数据充分DS -17797
State X has a sales tax rate of k percent on all purchases and State Y has a sales tax rate of n percent on all purchases. What is the value of k-n?(1)The sales tax on a $15 purchase is 30 cents more in State X than in State Y.(2)The sales tax rate in State X is 1.4 times the sales tax rate in State...
数据充分DS -17796
A novelist pays her agent 15% of the royalties she receives from her novels. She pays her publicist 5% of the royalties, plus a yearly fee. Did the novelist pay more to her agent last year than she paid to her publicist?（1）The publicist' s yearly fee is $2,000（2）The novelist earned an av...
分享
周末、晚班滚动开班 
24+35+35+6课时 
