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At the start of trading on a particular day the price of stock x is $5

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At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 10 May 2017, 02:29
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A
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C
D
E

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Question Stats:

96% (00:17) correct 4% (00:00) wrong based on 39 sessions

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At the start of trading on a particular day the price of stock x is $5. If during the day the price falls to $4 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14%
D. 16%
E. 20%

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Re: At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 10 May 2017, 03:18
Initial price: $5
Now, note that price falls to $4
So, Final price: $4
Difference in price: $1
Percentage decrease in price is given as: \(\frac{Difference}{Initial Price}*100\) which in this case would be:
\(\frac{$1}{$5}*100\) which is 20%.
Hence, option E should be the correct answer.
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Re: At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 12 May 2017, 13:40
Bunuel wrote:
At the start of trading on a particular day the price of stock x is $5. If during the day the price falls to $4 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14%
D. 16%
E. 20%


We can create the following equation in which n = the percent decrease:

5(1 - n/100) = 4

5(100 - n)/100 = 4

500 - 5n = 400

5n = 100

n = 20%

Answer: E
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Re: At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 13 May 2017, 00:51
Percentage decrease in the price is given as: \(\frac{Change}{Initial Price}\)*100
Initial Price= 5
Final Price= 4
Change in price= 1
= \(\frac{1}{5}\)*100
= 20%

Answer: E.

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Re: At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 13 May 2017, 03:22
At the start of trading on a particular day the price of stock x is $5. If during the day the price falls to $4 by what percent does the price of the stock decrease?

Percent change = difference in price/initial price * 100
Initial price = $5 , Price falls to = $4
Therefore Difference in price = 5-4 = $1

Percent Change = \(\frac{1}{5}\) * 100 = 20%
Answer E...

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At the start of trading on a particular day the price of stock x is $5  [#permalink]

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New post 13 May 2017, 05:31
Bunuel wrote:
At the start of trading on a particular day the price of stock x is $5. If during the day the price falls to $4 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14%
D. 16%
E. 20%


% change = \(\frac{(Final_Value - Initial_Value)}{Initial_Value}\) *100

i.e. % decrease = (4-5/5)*100 = (1/5)*100 = -20%

Negative Value means % Decrease and Positive result means % Increase
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At the start of trading on a particular day the price of stock x is $5 &nbs [#permalink] 13 May 2017, 05:31
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