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At the bakery, Lew spent a total of \$6.00 for one kind of

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Senior Manager
Joined: 30 Nov 2008
Posts: 479
Schools: Fuqua
At the bakery, Lew spent a total of \$6.00 for one kind of [#permalink]

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11 Oct 2009, 23:30
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64% (02:15) correct 36% (01:10) wrong based on 62 sessions

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At the bakery, Lew spent a total of \$6.00 for one kind of cupcake and one kind of doughnut. How many doughnuts did he buy?

1) The price of 2 doughnuts was \$0.10 less than the price of 3 cupcakes.
2) The average price of 1 doughnut and 1 cupcake was \$0.35.

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Joined: 29 Aug 2007
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12 Oct 2009, 00:04
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mrsmarthi wrote:
At the bakery, Lew spent a total of \$6.00 for one kind of cupcake and one kind of doughnut. How many doughnuts did he buy?

1) The price of 2 doughnuts was \$0.10 less than the price of 3 cupcakes.
2) The average price of 1 doughnut and 1 cupcake was \$0.35.

E. From i and ii: price of a doughnut = 0.40 and price of a cupcake = 0.30

nd + mp = 6
n = number of doughnuts
m = number of cupcack

1: 3p - 2d = 0.1 .............i
2: p + d = 2 (0.35) .....................ii

From i and ii: d = 0.40 and p = 0.30

If n = 0, m = 15.
If n = 4, m = 12.
....................
....................
If n = 20, m = 0

E..
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Senior Manager
Joined: 30 Nov 2008
Posts: 479
Schools: Fuqua

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12 Oct 2009, 00:14
Yes it is.......E

Hum...again a careless mistake - miscalculation from my side.
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Joined: 03 Oct 2009
Posts: 27
Schools: NY Stern; Columbia; Cornell; Waterloo; U of T

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12 Oct 2009, 18:56
Hi GMAT TIGER ,

Thanks for the explanation. I understood your calculation and logic behind 'E'.

However, I also came to the same conclusion. But for diffrent reasons. Please help me to understand whether I am wrong.

I assumed that there could be a burgain price for buying more than 1 of either of the items. So, when I buy one Doughnut or 1 Cupcake, the price charged could be more than a burgain price.

Thus, from both statements together I won't be able to answer the Q.

My Q to you is "Is my assumtion valid?" ---> For this Q or any similar Q?

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Joined: 29 Aug 2007
Posts: 2427

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12 Oct 2009, 22:00
Syed wrote:
Hi GMAT TIGER ,

Thanks for the explanation. I understood your calculation and logic behind 'E'.

However, I also came to the same conclusion. But for diffrent reasons. Please help me to understand whether I am wrong.

I assumed that there could be a burgain price for buying more than 1 of either of the items. So, when I buy one Doughnut or 1 Cupcake, the price charged could be more than a burgain price.

Thus, from both statements together I won't be able to answer the Q.

My Q to you is "Is my assumtion valid?" ---> For this Q or any similar Q?

Nope. You cannot go beyond the question and info provided. Your assumption do not have any effect on the answer because the answer is E. If it were other than E, your assumption would have altered the answer. In that case, you would be trapped to wrong answer. Your answer must be based only on the info provided..
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Joined: 03 Oct 2009
Posts: 27
Schools: NY Stern; Columbia; Cornell; Waterloo; U of T

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13 Oct 2009, 05:43
Thanks for the clarification Tiger..
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Joined: 09 Sep 2013
Posts: 7027
Re: At the bakery, Lew spent a total of \$6.00 for one kind of [#permalink]

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14 Sep 2017, 08:36
Hello from the GMAT Club BumpBot!

Thanks to another GMAT Club member, I have just discovered this valuable topic, yet it had no discussion for over a year. I am now bumping it up - doing my job. I think you may find it valuable (esp those replies with Kudos).

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--== 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!

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Re: At the bakery, Lew spent a total of \$6.00 for one kind of   [#permalink] 14 Sep 2017, 08:36
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