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Bunuel
At the start of trading on a particular day the price of stock x is $7. If during the day the price falls to $6 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14.3%
D. 16.67%
E. 20%

The stock fell by \(\frac{1}{7}\)

We need a 7th of 100%, 100/7 = 14.285
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Bunuel
At the start of trading on a particular day the price of stock x is $7. If during the day the price falls to $6 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14.3%
D. 16.67%
E. 20%

The price of the stock is $7,
Price falls to $6
So loss = &1

Percentage by which price of the stock decreased = $1/$7 x 100 = 14.3%
Answer C
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7th of 100%= 100/7 = 14.285
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Bunuel
At the start of trading on a particular day the price of stock x is $7. If during the day the price falls to $6 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14.3%
D. 16.67%
E. 20%

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

7(1 - n/100) = 6

7(100 - n)/100 = 6

700 - 7n = 600

7n = 100

n = 100/7 = 14.3%

Answer: C
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Percent decrease in the price of stock is given by following formula:
= \(\frac{Change}{Initial Price}\)*100

Initial Price= $7
Final Price= $6
Change= $7-$6= $1
= \(\frac{1}{7}\)*100= 14.3%

Answer: C.

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Bunuel
At the start of trading on a particular day the price of stock x is $7. If during the day the price falls to $6 by what percent does the price of the stock decrease?

A. 8%
B. 12.5%
C. 14.3%
D. 16.67%
E. 20%

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

7(1 - n/100) = 6

7(100 - n)/100 = 6

700 - 7n = 600

7n = 100

n = 100/7 ≈ 14.3

Alternate Solution:

Let’s use the percent change formula, which states: % change = [(Original Value – Final Value) / Original Value] x 100%. For this problem, the original value is 7 and the final value is 6.

% change = [(6 – 7) / 7] x 100%

% change = -1/7 x 100%

% change = -0.143 x 100%

% change = -14.3%

The negative value indicates a percentage decrease, so we have an approximate 14.3% decrease in the price of the stock.

Answer: C
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