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CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X

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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1650 [0], given: 396

CAT Tests
CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X [#permalink] New post 31 May 2017, 06:56
Expert's post
00:00

Question Stats:

100% (01:15) correct 0% (00:00) wrong based on 4 sessions
CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X


Image

For any Company X listed in the chart above, let ΔX be defined as the difference between the mean annual donation of employees of Company X in the period 1980–1990 and that for the same company in the period 1980–2000. Which of the following is closest to the ratio of ΔM to ΔB?

A. 2 to 1
B. 3 to 2
C. 1 to 1
D. 2 to 3
E. 1 to 2

Drill 2
Question: 3
Page: 341


[Reveal] Spoiler: img
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[Reveal] Spoiler: OA

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Sandy
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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4749
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 93

Kudos [?]: 1650 [0], given: 396

CAT Tests
Re: CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X [#permalink] New post 04 Jun 2017, 15:19
Expert's post
Explanation

According to the given definition, ΔM is 455.2 – 422.4 = 32.8, and ΔB is 40.2 – 18.2 = 22.

Round ΔM to 33, and the ratio of ΔM to ΔB is 33 to 22, which reduces to 3 to 2. Choice B is correct.
_________________

Sandy
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Re: CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X   [#permalink] 04 Jun 2017, 15:19
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CHARITABLE ANNUAL DONATIONS TO CHARITY GROUP X

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