Events & Promotions
|
|
GMAT Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Jun 1006:00 AM PDT
-06:15 PM PDT
Register for the GMAT Club Virtual MBA Spotlight Fair – the world’s premier event for serious MBA candidates. This is your chance to hear directly from Admissions Directors at nearly every Top 30 MBA program..
Jun 1111:00 AM EDT
-01:00 PM EDT
TTP GMAT OnDemand gives serious students 400+ hours of expert video instruction, the full TTP course, AI support, weekly office hours, and a 715+ score guarantee—all built for elite GMAT score improvement.
Jun 2207:30 PM EDT
-09:30 PM EDT
Master the GMAT with expert live instruction, a personalized study plan, and real-time support. Includes 40 hours of online classes plus 6 months of access to the TTP GMAT OnDemand video course. Class date: Mon/Wed June 22, 2026 →August 26, 2026
11 Jan 2024, 10:59
Kudos
Bookmarks
Dropdown 1: 17 out of 20
Dropdown 2: 2 out of 5
Be sure to select an answer first to save it in the Error Log before revealing the correct answer (OA)!
Difficulty:
55%
(hard)
Question Stats:
74% (03:08) correct
26%
(03:22)
wrong
based on 1414
sessions
History
Date
Time
Result
Not Attempted Yet
The above is a pictograph that represents selected results from a survey of steelworkers at the Cochran Central Steel Mill. Each symbol represents 50 workers in a sample of 2,000. Refer to this pictograph and use the dropdown menus to complete each statement in accordance with the information given above.
If one worker is selected at random from the surveyed 2,000, the chance that the worker earns less than $30,000 a year or has a college education or both is
If one worker is selected at random from the surveyed 2,000, the chance that the worker will both earn less than $30,000 a year and have a college education is
Attachment:
2.jpg [ 49.91 KiB | Viewed 16204 times ]
ShowHide Answer
Official Answer
Dropdown 1: 17 out of 20
Dropdown 2: 2 out of 5
11 Jan 2024, 20:38
Kudos
Bookmarks
Foo overlapping sets, I like to always translate to a table, takes 15 secs.
Here:
Let's stick with the number of symbols instead of going back to the total number of people.
(blank) // College // No College // Total
-30k // 16 // 6 // 22
+30k // 12 // 6 // 18
Total // 28 // 12 // 40
So, first question:
Number of people with college education: 28
Number of people who make -30k: 22
Number of people who have both (need to be substracted since counted twice): 16
Total: 28+22-16= 34
So 34/40=17/20
Second question:
It's quite immediate, the number is at the crossing of column "College" and "-30k", so 16
Total: 16/40=2/5
Here:
Let's stick with the number of symbols instead of going back to the total number of people.
(blank) // College // No College // Total
-30k // 16 // 6 // 22
+30k // 12 // 6 // 18
Total // 28 // 12 // 40
So, first question:
Number of people with college education: 28
Number of people who make -30k: 22
Number of people who have both (need to be substracted since counted twice): 16
Total: 28+22-16= 34
So 34/40=17/20
Second question:
It's quite immediate, the number is at the crossing of column "College" and "-30k", so 16
Total: 16/40=2/5
General Discussion
08 Apr 2024, 22:25
Kudos
Bookmarks
Each symbol represents 50 workers in a sample of 2000
=> There are 40 symbols
If one worker is selected at random from the surveyed 2,000, the chance that the worker earns less than $30,000 a year or has a college education or both is [17/20]
=> 6 symbols
=> % those both earn more than $30k and No college education = \(\frac{6}{40} = \frac{3}{20}\)
=> % those earning less than $30,000 a year or having a college education or both: \(1 - \frac{3}{20} = \frac{17}{20}\)
If one worker is selected at random from the surveyed 2,000, the chance that the worker will both earn less than $30,000 a year and have a college education is [2/5]
=> 16 symbols
=> % = \(\frac{16}{40} = \frac{2}{5}\)
=> There are 40 symbols
If one worker is selected at random from the surveyed 2,000, the chance that the worker earns less than $30,000 a year or has a college education or both is [17/20]
- Earn less than $30k
- Has a college education
- Both
=> 6 symbols
=> % those both earn more than $30k and No college education = \(\frac{6}{40} = \frac{3}{20}\)
=> % those earning less than $30,000 a year or having a college education or both: \(1 - \frac{3}{20} = \frac{17}{20}\)
If one worker is selected at random from the surveyed 2,000, the chance that the worker will both earn less than $30,000 a year and have a college education is [2/5]
- Earn less than $30k
- Have a collge education
=> 16 symbols
=> % = \(\frac{16}{40} = \frac{2}{5}\)
