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GRE Prep Club Team Member
Joined: 20 Feb 2017
Posts: 2506
Given Kudos: 1053
GPA: 3.39
A certain quantity is measured on two different scales, the R-scale an
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29 Nov 2021, 07:33
29 Nov 2021, 07:33
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Question Stats:
20% (02:23) correct
80% (02:07) wrong based on 5 sessions
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A certain quantity is measured on two different scales, the R-scale and the S-scale, that are related linearly. Measurements on the R-scale of 6 and 24 correspond to measurements on the S-scale of 30 and 60, respectively. What measurement on the R-scale corresponds to a measurement of 100 on the S-scale?
(A) 20
(B) 36
(C) 48
(D) 60
(E) 84
(A) 20
(B) 36
(C) 48
(D) 60
(E) 84
Re: A certain quantity is measured on two different scales, the R-scale an
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01 Dec 2021, 02:15
01 Dec 2021, 02:15
Expert Reply
As R increases by 18 (from 6 to 24), S increases by 30 (from 30 to 60). Thus increase of 18 in R corresponds to increase of 30 in S.
Therefore change of 70 in S from 30 (when R is 6) to 100 must correspond to change of 70/30*18=42 in R. Hence, 100 in S corresponds to 6+42=48 in R.
Answer: C.
Therefore change of 70 in S from 30 (when R is 6) to 100 must correspond to change of 70/30*18=42 in R. Hence, 100 in S corresponds to 6+42=48 in R.
Answer: C.
Re: A certain quantity is measured on two different scales, the R-scale an
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25 Oct 2024, 06:03
25 Oct 2024, 06:03
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