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# A stock decreases in value by 20 percent. By what percent must the sto

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Math Expert
Joined: 02 Sep 2009
Posts: 52161
A stock decreases in value by 20 percent. By what percent must the sto  [#permalink]

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24 Dec 2018, 22:17
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Difficulty:

15% (low)

Question Stats:

89% (00:51) correct 11% (00:56) wrong based on 28 sessions

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A stock decreases in value by 20 percent. By what percent must the stock price increase to reach its former value?

A. 15%
B. 20%
C. 25%
D. 30%
E. 40%

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Manager
Joined: 24 Nov 2018
Posts: 75
Location: India
GPA: 3.27
WE: General Management (Retail Banking)
Re: A stock decreases in value by 20 percent. By what percent must the sto  [#permalink]

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24 Dec 2018, 22:43
Bunuel wrote:
A stock decreases in value by 20 percent. By what percent must the stock price increase to reach its former value?

A. 15%
B. 20%
C. 25%
D. 30%
E. 40%

Suppose the value of the stock is 100. After decrease in value, it becomes 100-20=80. Required increase =20. Percentage of required increase=$$\frac{20}{80}*100=25$$% increase. Option C.
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Joined: 18 Aug 2017
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Concentration: Sustainability, Marketing
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Re: A stock decreases in value by 20 percent. By what percent must the sto  [#permalink]

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25 Dec 2018, 06:53
Bunuel wrote:
A stock decreases in value by 20 percent. By what percent must the stock price increase to reach its former value?

A. 15%
B. 20%
C. 25%
D. 30%
E. 40%

consider value of stock be 100\$

so 20% decrease = 100 *.8 = 80

to get back to same level 100-80/80 = 25 %
IMO C
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Re: A stock decreases in value by 20 percent. By what percent must the sto &nbs [#permalink] 25 Dec 2018, 06:53
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