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QOTD#20 In 2009, the price of each Econolux car increased by

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GMAT Club Legend
GMAT Club Legend
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Joined: 07 Jun 2014
Posts: 4710
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1612 [0], given: 375

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QOTD#20 In 2009, the price of each Econolux car increased by [#permalink] New post 03 Apr 2017, 04:26
Expert's post
00:00

Question Stats:

100% (00:00) correct 0% (00:00) wrong based on 3 sessions
In 2009, the price of each Econolux car increased by 10 percent from the 2008 price. In 2010, they decreased by 5 percent and now cost between $18,000 and $19,800. Which of the following could be the price of a 2008 Econolux car?

Indicate all possible values.

A. $17,030
B. $17,230
C. $18,180
D. $18,935
E. $18,955
F. $20,790


Drill 4
Question: 1
Page: 321


[Reveal] Spoiler: OA
B, C, D
[Reveal] Spoiler: OA

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GMAT Club Legend
GMAT Club Legend
User avatar
Joined: 07 Jun 2014
Posts: 4710
GRE 1: Q167 V156
WE: Business Development (Energy and Utilities)
Followers: 91

Kudos [?]: 1612 [0], given: 375

CAT Tests
Re: QOTD#20 In 2009, the price of each Econolux car increased by [#permalink] New post 17 Apr 2017, 09:51
Expert's post
Explanation

It’s useful to use plugging values in this problem.

Note that increasing something by 10 percent is the same as multiplying by 1.10, and decreasing something by 5 percent is the same as multiplying
by 0.95.

Definitely use your on-screen calculator on a problem such as this. Because you are dealing with a range, it will save you time to work from the top down until you reach a correct answer, then work your way from the bottom up until you reach a correct answer. Each answer in between the smallest correct answer and the largest correct answer must also be correct.



Attachment:
di new1.jpg
di new1.jpg [ 18.01 KiB | Viewed 965 times ]


Hence option B,C and D are correct!
_________________

Sandy
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Re: QOTD#20 In 2009, the price of each Econolux car increased by   [#permalink] 17 Apr 2017, 09:51
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QOTD#20 In 2009, the price of each Econolux car increased by

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