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This topic has 1 expert reply and 8 member replies
Fab Senior | Next Rank: 100 Posts Default Avatar
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1

Post Sat Nov 08, 2008 8:15 am
Elapsed Time: 00:00
  • Lap #[LAPCOUNT] ([LAPTIME])
    Q24:
    A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-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%

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    dmateer25 Community Manager
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    Post Sat Nov 08, 2008 8:24 am
    After 20 Days: .01*20=.20 ounces evaporated

    .20/10 = .02 * 100 = 2%

    IMO D

    raunekk Legendary Member Default Avatar
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    Post Sat Nov 08, 2008 9:24 am
    imo:B

    0.02 %

    whats d OA??

    cramya Legendary Member Default Avatar
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    Post Sat Nov 08, 2008 9:29 am
    Quote:
    A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-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%
    In 20 days 20*.01 = .2

    % evaporated = .2/10 * 100 = .2*10 = 2 %
    D)

    logitech Legendary Member
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    Post Sat Nov 08, 2008 9:32 am
    IMO, the poster should post the OA Mad

    I know Cramya is smiling now Laughing

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    cramya Legendary Member Default Avatar
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    Post Sat Nov 08, 2008 9:35 am
    Quote:
    I know Cramya is smiling now
    You bet!

    Fab Senior | Next Rank: 100 Posts Default Avatar
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    Post Sat Nov 08, 2008 1:50 pm
    OA: D

    THANKS

    raunekk Legendary Member Default Avatar
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    Post Sat Nov 08, 2008 9:02 pm
    wat i was thinking,,,

    sorry ...my mistake,,,


    has to be D

    sgarnepudi Junior | Next Rank: 30 Posts Default Avatar
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    Post Sat Nov 08, 2008 9:07 pm
    It is 2% (D) .. 0.01*20 = 0.20. Lets assume its 1 ounce. 1.00-0.20 = 20% now divide by 10 we get 2%. Is the answer correct?

    Post Thu Apr 30, 2015 10:30 am
    Fab wrote:
    Q24:
    A glass was filled with 10 ounces of water, and 0.01 ounce of the water evaporated each day during a twenty-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%
    Solution:

    We are given that 0.01 ounces of water evaporated EACH DAY. Furthermore, we know that this process happened over a 20-DAY PERIOD. To calculate the total amount of water that evaporated during this time frame we need to multiply 0.01 by 20. This gives us:

    0.01 x 20 = 0.2 ounces

    Finally, we are asked for “What percent” of the original amount of water evaporated during this period. To determine this percentage, we have to make sure we translate the expression correctly. We can translate it to:

    (Amount Evaporated/Original Amount) x 100%

    (0.2/10) x 100%

    (2/100) x 100% = 2%

    Answer D

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