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a:b=3:1, a:d=15:2, c:e=7:9, and c:d=10:3
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30 Jul 2020, 11:59
30 Jul 2020, 11:59
Expert Reply
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Question Stats:
92% (02:14) correct
8% (02:22) wrong based on 50 sessions
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\(a:b=3:1\), \(a:d=15:2\), \(c:e=7:9\), 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
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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
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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.
