Powered equipment

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neeti2711: Master | Next Rank: 500 Posts; Posts: 116; Joined: Sat Sep 22, 2012 9:48 pm; Thanked: 3 times

by neeti2711 » Tue Feb 28, 2017 7:12 am

Lacking information about water use, people tend to overestimate the amount of water used by manually-powered equipment, such as sinks and toilets, that must be turned on and off, and underestimate it when used by automated equipment such as fountains and irrigation devices.

(A) manually-powered equipment, such as sinks and toilets, that must be turned on and off, and underestimate it when
(B) manually-powered equipment, such as sinks and toilets, that must be turned on and off, and underestimate that
(C) equipment, such as sinks and toilets, which are manually powered and must be turned on and off and underestimate that
(D) equipment, such as sinks and toilets, that are manually powered and must be turned on and off and underestimate it when
(E) equipment, such as sinks and toilets, that is manually powered and must be turned on and off and underestimate it when

OA: B

Is this a typical GMAT question? I am not certain of the source's authenticity

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Source: Beat The GMAT — Sentence Correction | Tue Feb 28, 2017 7:12 am

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Ali Tariq: GMAT Instructor; Posts: 272; Joined: Wed Nov 09, 2016 11:11 amFollowed by: 204 members; Location: Lahore, Pakistan; Thanked: 87 times

by Ali Tariq » Tue Feb 28, 2017 10:15 pm

Mimicked after following official SC:

Lacking information about energy use, people tend to overestimate the amount of energy used by equipment, such as lights, that are visible and must be turned on and off and underestimate that used by unobtrusive equipment, such as water heaters.

(A) equipment, such as lights, that are visible and must be turned on and off and underestimate that
(B) equipment, such as lights, that are visible and must be turned on and off and underestimate it when
(C) equipment, such as lights, that is visible and must be turned on and off and underestimate it when
(D) visible equipment, such as lights, that must be turned on and off and underestimate that
(E) visible equipment, such as lights, that must be turned on and off and underestimate it when

OA D

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ceilidh.erickson: GMAT Instructor; Posts: 2095; Joined: Tue Dec 04, 2012 3:22 pmFollowed by: 247 members; Thanked: 1443 times

by ceilidh.erickson » Wed Mar 01, 2017 9:11 am

Neeti - what is the source of this question?

I hope this goes without saying, but you should avoid sources that plagiarize the Official Guide! Not only is it an ethical violation, but it also demonstrates that the writers of the question don't know the test well enough to write their own material. This is clearly not a high-quality source.

Ceilidh Erickson
EdM in Mind, Brain, and Education
Harvard Graduate School of Education

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