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A local grocer purchased eggs at a cost of c dollars per dozen each

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A local grocer purchased eggs at a cost of c dollars per dozen each [#permalink]

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New post 13 Mar 2018, 10:46
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  35% (medium)

Question Stats:

85% (02:14) correct 15% (00:06) wrong based on 13 sessions

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A local grocer purchased eggs at a cost of c dollars per dozen each morning and sold all of them by the day end at a cost of s dollars per dozen. He made a profit of 100% on the sale of eggs each day. One morning there was a minor accident at the grocer’s shop in which some of the eggs he had bought that morning broke and therefore, were rendered unsaleable. The grocer sold the remaining eggs at their usual selling price and made a profit of 50% on the sale of eggs that day. What percentage of the eggs bought by the grocer that morning broke in the accident?

A) 25%
B) 33%
C) 50%
D) 67%
E) Cannot be determined

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[Reveal] Spoiler: OA

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A local grocer purchased eggs at a cost of c dollars per dozen each [#permalink]

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New post 13 Mar 2018, 11:22
saswata4s wrote:
A local grocer purchased eggs at a cost of c dollars per dozen each morning and sold all of them by the day end at a cost of s dollars per dozen. He made a profit of 100% on the sale of eggs each day. One morning there was a minor accident at the grocer’s shop in which some of the eggs he had bought that morning broke and therefore, were rendered unsaleable. The grocer sold the remaining eggs at their usual selling price and made a profit of 50% on the sale of eggs that day. What percentage of the eggs bought by the grocer that morning broke in the accident?

A) 25%
B) 33%
C) 50%
D) 67%
E) Cannot be determined


Let grocer bought and sold \(n\) dozens of egg.

As his profit is 100% implying \(s=2c\)

Total cost price \(= c*n\). let \(x\) eggs broke. So he sold \(n-x\) eggs

Total Selling price \(= (n-x)*2c\)

Hence profit%\(=\frac{(n-x)*2c-c*n}{c*n}=\frac{1}{2}\)

\(=>\frac{2cn-2cx-cn}{cn}=\frac{1}{2}=>\frac{n-x}{n}=\frac{1}{2}=>1-\frac{x}{n}=\frac{1}{2}\)

Therefore \(\frac{x}{n}=\frac{1}{2}=25\)%

Option A

----------------------------------------------------------------

Alternatively, you can also work through options.

Let he bought 100 dozen eggs. Using option A, he now has 75 dozen eggs

CP per dozen = c and SP per dozen=s=2c

so total cost=100c and total SP=2c*75=150c

Therefore profit %=(150c-100c)/100c=50%. Hence Option A is correct

--== Message from GMAT Club Team ==--

This is not a quality discussion. It has been retired.

If you would like to discuss this question please re-post it in the respective forum. Thank you!

To review the GMAT Club's Forums Posting Guidelines, please follow these links: Quantitative | Verbal Please note - we may remove posts that do not follow our posting guidelines. Thank you.
A local grocer purchased eggs at a cost of c dollars per dozen each   [#permalink] 13 Mar 2018, 11:22
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A local grocer purchased eggs at a cost of c dollars per dozen each

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