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Math Help - SAT QOTD - July 18

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    Senior Member vaironxxrd's Avatar
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    SAT QOTD - July 18

    Help with this SAT QUESTION OF THE DAY PLEASE.

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    MHF Contributor Also sprach Zarathustra's Avatar
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    Re: SAT QOTD - July 18

    Quote Originally Posted by vaironxxrd View Post
    Help with this SAT QUESTION OF THE DAY PLEASE.

    Length=x and width=y in rectangle B

    Hence,

    Length=(9/10)x and width=(7/10)y in rectangle A

    So...?
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    Senior Member vaironxxrd's Avatar
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    Re: SAT QOTD - July 18

    Quote Originally Posted by Also sprach Zarathustra View Post
    Length=x and width=y in rectangle B

    Hence,

    Length=(9/10)x and width=(7/10)y in rectangle A

    So...?

    You know I just gave a balue to B and got this.

    If B Lenght = 20 and Width = 10

    90% of 20 = 18 and 70% of 10 = 7.

    Then if you do 20*10 = 200 and 7* 18 = 126 the percent = 63?
    But I suppose there has to be an easier way
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    Senior Member BAdhi's Avatar
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    Re: SAT QOTD - July 18

    how about taking the length as 10 and width also as 10

    so the area of B is 100 and the area of A is 63
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    Senior Member vaironxxrd's Avatar
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    Re: SAT QOTD - July 18

    Quote Originally Posted by BAdhi View Post
    how about taking the length as 10 and width also as 10

    so the area of B is 100 and the area of A is 63
    That makes even more sense ... I just for some reason can't get the numbers to make sense. Really I could say is like if they are making me crazy and I can't think of how to well. I feel like I should review some of my old math
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    Re: SAT QOTD - July 18

    Triangle B = 1 by 1
    Triangle A = (1 - .10) by (1 - .30) = .9 by .7 = .63 = 63%
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    Senior Member vaironxxrd's Avatar
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    Re: SAT QOTD - July 18

    Quote Originally Posted by Wilmer View Post
    Triangle B = 1 by 1
    Triangle A = (1 - .10) by (1 - .30) = .9 by .7 = .63 = 63%
    Even easier
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    Re: SAT QOTD - July 18

    Whoops, meant RECTANGLE, not triangle...1st mistake this year !
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    Senior Member vaironxxrd's Avatar
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    Re: SAT QOTD - July 18

    Quote Originally Posted by Wilmer View Post
    Whoops, meant RECTANGLE, not triangle...1st mistake this year !
    Minor mistake that is
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