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
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
Apr 26Get a Top GRE Score with Target Test Prep
12:00 PM EDT
-01:00 PM EDT
The Target Test Prep course represents a quantum leap forward in GRE preparation, a radical reinterpretation of the way that students should study. In fact, more and more Target Test Prep students are scoring 329 and above on the GRE.
Apr 24Get an Extra 30% Off Target Test Prep Plans
08:00 PM EDT
-11:59 PM EDT
Grab 30% off any Target Test Prep GRE plan during our Flash Sale and join Brian and many other students who have used Target Test Prep to score high on the GRE. Just enter the coupon code FLASH30 at checkout to save big.
Of the 300 subjects who participated in an experiment using
[#permalink]
19 May 2020, 09:02
19 May 2020, 09:02
Expert Reply
1
Bookmarks
00:00
Question Stats:
49% (04:44) correct
50% (02:58) wrong based on 51 sessions
Hide Show timer Statistics
Of the 300 subjects who participated in an experiment using virtual-reality therapy to reduce their fear of heights, 40 percent experienced sweaty palms, 30 percent experienced vomiting, and 75 percent experienced dizziness. If all of the subjects experienced at least one of these effects and 35 percent of the subjects experienced exactly two of these effects, how many of the subjects experienced only one of these effects?
A. 105
B. 125
C. 130
D. 180
E. 195
A. 105
B. 125
C. 130
D. 180
E. 195
Re: Of the 300 subjects who participated in an experiment using
[#permalink]
19 May 2020, 09:03
19 May 2020, 09:03
Expert Reply
1
Bookmarks
Post A Detailed Correct Solution For The Above Questions And Get A Kudos.
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Question From Our New Project: GRE Quant Challenge Questions Daily - NEW EDITION!
Re: Of the 300 subjects who participated in an experiment using
[#permalink]
19 May 2020, 22:06
19 May 2020, 22:06
2
I didn't get why the answer is 180?
I solved it in that way: each group percentage convert to the member numbers, which is equals to:
Sweat p. - 120 members
Vomit - 90
Diz. - 225
both cases - 105
and used this formula: Total = Sweat. + Vomit. + Diz. - both effects - three effects, hence from there I obtained three effects number and it's equals to 30 members
300 = 120+90+225 - 105 - three cases
three cases = 30
now I just substract 105+30 from 300, and will get the number of people who experienced only one sympt 165 members, is my solution correct?
I solved it in that way: each group percentage convert to the member numbers, which is equals to:
Sweat p. - 120 members
Vomit - 90
Diz. - 225
both cases - 105
and used this formula: Total = Sweat. + Vomit. + Diz. - both effects - three effects, hence from there I obtained three effects number and it's equals to 30 members
300 = 120+90+225 - 105 - three cases
three cases = 30
now I just substract 105+30 from 300, and will get the number of people who experienced only one sympt 165 members, is my solution correct?
