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# GMAT Diagnostic Test Question 33

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GMAT Diagnostic Test Question 33 [#permalink]

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06 Jun 2009, 23:16
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GMAT Diagnostic Test Question 33
Field: word problems (mixture)
Difficulty: 650
 Rating:

A kilogram of nut mixture contains X% chestnuts and Y% walnuts and sells for $7.00/kg. If the ratio of chestnuts is increased by 50% so that the new mixture is sold for$8.00/kg, what is the price of a kg of walnuts?

A. $1.00 B.$2.50
C. $5.00 D.$7.50

0,2Y=1 --> Y=5 $Quicker. Regards, -Noboru. _________________ The sky is the limit 800 is the limit GMAT Club Premium Membership - big benefits and savings Manager Joined: 22 Jul 2009 Posts: 191 Followers: 4 Kudos [?]: 241 [0], given: 18 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 22 Aug 2009, 23:54 Noboru, Could you explain where do you get 20% of walnuts? Thanks _________________ Please kudos if my post helps. Last edited by powerka on 23 Aug 2009, 09:03, edited 1 time in total. SVP Joined: 16 Jul 2009 Posts: 1629 Schools: CBS WE 1: 4 years (Consulting) Followers: 39 Kudos [?]: 780 [0], given: 2 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 23 Aug 2009, 04:30 powerka wrote: Nobory, Could you explain where do you get 20% of walnuts? Thanks From the question: 33. A kilogram of nut mixture contains X% chestnuts and Y% walnuts and sells for$7.00/kg. If the ratio of walnuts is
increased by 20% so that the new mixture
is sold for $8.00/kg, what is the price of 1 kg of walnuts? _________________ The sky is the limit 800 is the limit GMAT Club Premium Membership - big benefits and savings Founder Affiliations: AS - Gold, HH-Diamond Joined: 04 Dec 2002 Posts: 13834 Location: United States (WA) GMAT 1: 750 Q49 V42 GPA: 3.5 Followers: 3332 Kudos [?]: 19432 [0], given: 4259 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 23 Aug 2009, 08:10 Expert's post noboru wrote: powerka wrote: Nobory, Could you explain where do you get 20% of walnuts? Thanks From the question: 33. A kilogram of nut mixture contains X% chestnuts and Y% walnuts and sells for$7.00/kg. If the ratio of walnuts is
increased by 20% so that the new mixture
is sold for $8.00/kg, what is the price of 1 kg of walnuts? This question has gone through several revisions (originally 20%) and currently modified to 50%. (The idea behind the test is to revise questions as we find issues with them or cleaner solutions). That's what happened - please download the latest PDF. Thanks! _________________ Founder of GMAT Club US News 2008 - 2017 Rankings progression - New! Just starting out with GMAT? Start here... Need GMAT Book Recommendations? Best GMAT Books Co-author of the GMAT Club tests GMAT Club Premium Membership - big benefits and savings Manager Joined: 22 Jul 2009 Posts: 191 Followers: 4 Kudos [?]: 241 [0], given: 18 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 23 Aug 2009, 10:52 So I guess there's no valid shortcut. Ideas anybody? _________________ Please kudos if my post helps. Intern Joined: 01 Sep 2009 Posts: 4 Followers: 0 Kudos [?]: 0 [0], given: 2 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 21 Sep 2009, 19:19 Hi, I think there is issue with problem. Last part of the question asks for the price of 1 KG of Walnut, not the price of the walnut in the mixture... I tried in this way .4 kg of X .6 kg of Y total 1 kg. Now increase X by 50%...now it becomes .6 , which means .2 increase costs$1 more. Hence, .4 Kg cost of X will be $2. Remaining$ 5 is for .6 Kg of Y. So for 1 kg of Y will be $8.34 (5/ 0.6) Do you think I am in a right direction ? Manager Joined: 22 Jul 2009 Posts: 191 Followers: 4 Kudos [?]: 241 [0], given: 18 Re: GMAT Diagnostic Test Question 33 [#permalink] ### Show Tags 22 Sep 2009, 10:50 adssaini wrote: Hi, I think there is issue with problem. Last part of the question asks for the price of 1 KG of Walnut, not the price of the walnut in the mixture... adssaini: I think you are right. Question does ask for the price of 1 KG of Walnut, not the price of the walnut in the mixture. A0 = C + W = 7 A1 = 1.5C + W = 8 => C=2 => W=5$5 is the price of walnuts in the mixture, not the price of 1 KG of walnuts.

We don't have the value of Y => can't know how many KG of walnuts the mixture has => can't calculate the price of 1 KG of walnuts.
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Re: GMAT Diagnostic Test Question 33 [#permalink]

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19 Oct 2009, 03:57
bb wrote:
GMAT Diagnostic Test Question 33
Field: word problems (mixture)
Difficulty: 650
 Rating:

A kilogram of nut mixture contains X% chestnuts and Y% walnuts and sells for $7.00/kg. If the ratio of chestnuts is increased by 50% so that the new mixture is sold for$8.00/kg, what is the price of a kg of walnuts?

A. $1.00 B.$2.50
C. $5.00 D.$7.50
E. \$10.00

I am afraid this question has more than one correct answer unless you provide in the statement one of the percentages of the mixture either the chestnuts content or the walnuts content.
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Re: GMAT Diagnostic Test Question 33 [#permalink]

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13 Nov 2009, 11:23
I don't think this isn't a 650 level question...
Re: GMAT Diagnostic Test Question 33   [#permalink] 13 Nov 2009, 11:23

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# GMAT Diagnostic Test Question 33

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