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A store purchased 20 coats that each cost an equal amount

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Director
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A store purchased 20 coats that each cost an equal amount [#permalink] New post 16 Oct 2006, 18:49
A store purchased 20 coats that each cost an equal amount and then sold each of the 20 coats at an equal price. What was the store's gross profit on the 20 coats?
1.) if the selling price per coat had been twice as much, the store's gross profit on the 20 coats would have been $2400.
2.) if the selling price per coat had been $2 more, the store's gross profit on the 20 coats would have been $440.
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 [#permalink] New post 16 Oct 2006, 18:56
E?
Nothing is told about the cost price of each coat.....in either of the cases.
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 [#permalink] New post 16 Oct 2006, 19:43
B for me....

From the stem we get 20x - 20y. So if we can find the value of 20x - 20y, we have the solution...

1) Insufficient - we get 20x - 40y = 2400... and thus cannot solve...

2) sufficient - the statement translates into 20x - 20(y+2) = 440. Simplfy and we get 20x - 20y = 480...

so 480 is the answer and statement 2 by itself is sufficient..
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 [#permalink] New post 17 Oct 2006, 07:52
A store purchased 20 coats that each cost an equal amount and then sold each of the 20 coats at an equal price. What was the store's gross profit on the 20 coats?
1.) if the selling price per coat had been twice as much, the store's gross profit on the 20 coats would have been $2400.
2.) if the selling price per coat had been $2 more, the store's gross profit on the 20 coats would have been $440

purhase price = 20x
selling price = 20y

profit = 20(y-x)

from one

40y - 20x= 2400.......insuff

from two
20(y+2 )- 20x = 440

ie 20(y-x) = 400........suff

my answer is B
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Re: word problem question [#permalink] New post 17 Oct 2006, 17:17
uphillclimb wrote:
A store purchased 20 coats that each cost an equal amount and then sold each of the 20 coats at an equal price. What was the store's gross profit on the 20 coats?
1.) if the selling price per coat had been twice as much, the store's gross profit on the 20 coats would have been $2400.
2.) if the selling price per coat had been $2 more, the store's gross profit on the 20 coats would have been $440.


B?
I feel like I'm missing something. Am I ?
Re: word problem question   [#permalink] 17 Oct 2006, 17:17
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