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# An antique dealer bought a chair for $100 and later sold it for$1,000

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Math Expert
Joined: 02 Sep 2009
Posts: 55274
An antique dealer bought a chair for $100 and later sold it for$1,000  [#permalink]

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26 Nov 2018, 00:05
00:00

Difficulty:

25% (medium)

Question Stats:

76% (00:38) correct 24% (00:58) wrong based on 24 sessions

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An antique dealer bought a chair for $100 and later sold it for$1,000. By what percent did the value of the chair increase?

A. 10%
B. 90%
C. 100%
D. 900%
E. 1,000%

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Joined: 19 Apr 2017
Posts: 78
Concentration: General Management, Sustainability
Schools: ESSEC '22
GPA: 3.9
WE: Operations (Hospitality and Tourism)
An antique dealer bought a chair for $100 and later sold it for$1,000  [#permalink]

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01 Dec 2018, 10:15
To calculate the Change in percentage:

First: calculate the difference between the two numbers you are comparing.
Then: divide the increase by the original number and multiply the answer by 100.

Increase %= $$\frac{(New-Original)}{Original}$$ *100
Increase % = $$\frac{1000-100}{100}$$ × 100 = 900%

So D
An antique dealer bought a chair for $100 and later sold it for$1,000   [#permalink] 01 Dec 2018, 10:15
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