Last visit was: 08 Oct 2024, 04:49 It is currently 08 Oct 2024, 04:49

Close

GRE Prep 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

we will pick new questions that match your level based on your Timer History

Track
Your Progress

every week, we’ll send you an estimated GRE score based on your performance

Practice
Pays

we will pick new questions that match your level based on your Timer History

Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.

Close

Request Expert Reply

Confirm Cancel
SORT BY:
Kudos
Manager
Manager
Joined: 04 Jan 2019
Posts: 62
Own Kudos [?]: 112 [8]
Given Kudos: 5
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 29656
Own Kudos [?]: 35567 [2]
Given Kudos: 25788
Send PM
Verbal Expert
Joined: 18 Apr 2015
Posts: 29656
Own Kudos [?]: 35567 [2]
Given Kudos: 25788
Send PM
avatar
Intern
Intern
Joined: 03 Aug 2023
Posts: 1
Own Kudos [?]: 1 [1]
Given Kudos: 2
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
1
I also think it's A.
Intern
Intern
Joined: 23 Feb 2023
Posts: 47
Own Kudos [?]: 19 [0]
Given Kudos: 5
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
Hi there,
Unfortunately I do not understand the explanation provided. I tried solving it with the double matrix method and obtained A. Can someone explain it please via double matrix method?
Verbal Expert
Joined: 18 Apr 2015
Posts: 29656
Own Kudos [?]: 35567 [0]
Given Kudos: 25788
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
Expert Reply
But this is NOT a double matrix problem. I do not understand this fixation with the double matrix way to solve
Intern
Intern
Joined: 23 Feb 2023
Posts: 47
Own Kudos [?]: 19 [0]
Given Kudos: 5
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
Can you please provide more details in your way of thinking? Can't really get your calculations
Intern
Intern
Joined: 23 Feb 2023
Posts: 47
Own Kudos [?]: 19 [0]
Given Kudos: 5
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
Hi there, I have looked at this question again but I do not agree with having 27% as a correct answer. I think it's 7.5%. Double matrix method yields 7.5%. Can others also post what you think?
Intern
Intern
Joined: 28 Aug 2022
Posts: 25
Own Kudos [?]: 8 [0]
Given Kudos: 5
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
but it says % of investors "surveyed" who traded in that category, then how can we jump to the conclusion that its additon = 35%. Actual people who traded in A and B is higher right. I mean say 100 people actually traded in A, then only 82% were surveyed.
Verbal Expert
Joined: 18 Apr 2015
Posts: 29656
Own Kudos [?]: 35567 [0]
Given Kudos: 25788
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
Expert Reply
At a closer look I also thing tha answer is A

With the formula

A+B-B+N=156

128+70-55+N=156

N=13

What percent of 156000 is 13000

x/100 156000=13000

x=8

The answer should be A
Manager
Manager
Joined: 19 Sep 2024
Posts: 56
Own Kudos [?]: 30 [0]
Given Kudos: 7
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
I also think the answer here should be A
Total = A + B - (both A and B) + (neither A nor B)
156000 = 82%*156000 + 45.5%*156000 - 35%*156000 + neither
<=> neither = 11700
=> percent of investors traded in neither of these two categories = 11700/156000 = 7.5%
Intern
Intern
Joined: 29 Jun 2022
Posts: 1
Own Kudos [?]: 0 [0]
Given Kudos: 0
Send PM
Re: If 35% of the investors traded in both category A [#permalink]
The answer is A.
82% of the investors traded in A -> 18% of the investors did not trade in A.
45.5% of the investors traded in B and 35% of the investor traded in both A and B -> 10.5% traded in B but not in A.
Therefore, 7.5% traded neither in A nor B (18-10.5).
Moderators:
GRE Instructor
76 posts
GRE Forum Moderator
37 posts
Moderator
1108 posts
GRE Instructor
222 posts

Powered by phpBB © phpBB Group | Emoji artwork provided by EmojiOne