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.
a:b=3:1, a:d=15:2, c:e=7:9, and c:d=10:3
[#permalink]
30 Jul 2020, 11:59
30 Jul 2020, 11:59
Expert Reply
00:00
Question Stats:
90% (02:23) correct
9% (02:13) wrong based on 55 sessions
Hide Show timer Statistics
\(a:b=3:1\), \(a:d=15:2\), \(c:e=7:9\), and \(c:d=10:3\)
If \(e = 60\), what is the value of b?
A. 20
B. 35
C. 70
D. 180
E. The value cannot be determined from the information given.
If \(e = 60\), what is the value of b?
A. 20
B. 35
C. 70
D. 180
E. The value cannot be determined from the information given.
Re: a:b=3:1, a:d=15:2, c:e=7:9, and c:d=10:3
[#permalink]
30 Jul 2020, 12:01
30 Jul 2020, 12:01
Expert Reply
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: a:b=3:1, a:d=15:2, c:e=7:9, and c:d=10:3
[#permalink]
30 Jul 2020, 14:38
30 Jul 2020, 14:38
1
Carcass wrote:
\(a:b=3:1\), \(a:d=15:2\), \(c:e=7:9\), and \(c:d=10:3\)
If \(e = 60\), what is the value of b?
A. 20
B. 35
C. 70
D. 180
E. The value cannot be determined from the information given.
If \(e = 60\), what is the value of b?
A. 20
B. 35
C. 70
D. 180
E. The value cannot be determined from the information given.
Remember that x:y = x/y. So we've been given a bunch of proportions we have to work through to solve for b.
With e we can use cross-multiplication to solve for c, which we can in turn use to solve for d, which we can in turn use to solve for a, which we can finally use to solve for b. b = 35 so the answer is B.
