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A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
 08 Oct 2012, 01:53
Question Stats:
68% (01:28) correct
31% (00:37) wrong based on 19 sessions
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GMAT Club team member
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
08 Oct 2012, 01:53
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Director
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
08 Oct 2012, 02:03
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Bunuel wrote: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions ProjectA glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a 20-day period. What percent of the original amount of water evaporated during this period? (A) 0.002% (B) 0.02% (C) 0.2% (D) 2% (E) 20% Practice Questions
Question: 58
Page: 160
Difficulty: 600 GMAT Club is introducing a new project: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions ProjectEach week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution. We'll be glad if you participate in development of this project: 1. Please provide your solutions to the questions; 2. Please vote for the best solutions by pressing Kudos button; 3. Please vote for the questions themselves by pressing Kudos button; 4. Please share your views on difficulty level of the questions, so that we have most precise evaluation. Thank you! 0.01 ounce evaporates each day for twenty days. So totally 0.01 x 20 = 0.2 ounces have evaporated (0.2/10)*(100) = 2% Answer is hence D Although I'm having my doubts since I'm getting the answer to a 600 level question so easily  _________________
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
08 Oct 2012, 02:45
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Amount to water evaporated during 20 days = .01 * 20 = 0.2 ounce percent of the original amount of water evaporated = .2 * 100/10 = 20/10 = 2% Answer D
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
09 Oct 2012, 22:10
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Water evaporated = 0.01 *20 ounce = 0.20 ounce Original water = 10 ounce Water evaporated as percentage = 0.20 *100/10 = 2% Ans D. Bunuel wrote: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions ProjectA glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a 20-day period. What percent of the original amount of water evaporated during this period? (A) 0.002% (B) 0.02% (C) 0.2% (D) 2% (E) 20% Practice Questions
Question: 58
Page: 160
Difficulty: 600 GMAT Club is introducing a new project: The Official Guide for GMAT® Review, 13th Edition - Quantitative Questions ProjectEach week we'll be posting several questions from The Official Guide for GMAT® Review, 13th Edition and then after couple of days we'll provide Official Answer (OA) to them along with a slution. We'll be glad if you participate in development of this project: 1. Please provide your solutions to the questions; 2. Please vote for the best solutions by pressing Kudos button; 3. Please vote for the questions themselves by pressing Kudos button; 4. Please share your views on difficulty level of the questions, so that we have most precise evaluation. Thank you!
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
11 Oct 2012, 03:48
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Before 10 onces After 0.01 * 20 = 0.2 tranlsate x/100 of 10 = 0.20 -----> 2 D wins
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
11 Oct 2012, 13:30
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce [#permalink]
02 May 2013, 10:28
I'm tackling the problem head on with simple math, 10x.01=.10x20=2%
Can someone tell me why they would prefer using fractions opposed to multiplications, for this specific problem.
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Re: A glass was filled with 10 ounces of water, and 0.01 ounce
[#permalink]
02 May 2013, 10:28
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