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Which of the following expresses 25% less than 300% of x, if x is a po

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Bunuel
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Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   11 Jan 2018, 23:08
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Which of the following expresses 25% less than 300% of x, if x is a positive number?

A. 3.25x
B. 3.75x
C. 2.75x
D. 2.25x
E. 0.05x
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D
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   21 Jan 2018, 15:12
25% less of 300%x = 75% of 300% of X = 3/4 * 3 * X = 9/4x = 1.25X ( D)
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   21 Jan 2018, 23:44
Bunuel wrote:
Which of the following expresses 25% less than 300% of x, if x is a positive number?

A. 3.25x
B. 3.75x
C. 2.75x
D. 2.25x
E. 0.05x

75% of 300% of x

= 2.25x , answer must be (D)
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   08 Jul 2018, 09:54
Bunuel wrote:
Which of the following expresses 25% less than 300% of x, if x is a positive number?

A. 3.25x
B. 3.75x
C. 2.75x
D. 2.25x
E. 0.05x


What is wrong about my approach please?

300%= \(\frac{400}{100}\). So 300% of x = 4x.

\(\frac{400}{100}\)x * \(\frac{3}{4}\) = \(\frac{1200}{400}\)x = 3x
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   08 Jul 2018, 11:32
Bunuel wrote:
Which of the following expresses 25% less than 300% of x, if x is a positive number?

A. 3.25x
B. 3.75x
C. 2.75x
D. 2.25x
E. 0.05x


Alternate method : By Plugging in some number

Let X = 100 , So, 300% of 100 = 300

Now, 25% less than 300% of x = 75% of 300 => 225 , Thus, answer must be (D)
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink] New post   11 Jul 2018, 19:08
msurls wrote:
Bunuel wrote:
Which of the following expresses 25% less than 300% of x, if x is a positive number?

A. 3.25x
B. 3.75x
C. 2.75x
D. 2.25x
E. 0.05x


What is wrong about my approach please?

300%= \(\frac{400}{100}\). So 300% of x = 4x.

\(\frac{400}{100}\)x * \(\frac{3}{4}\) = \(\frac{1200}{400}\)x = 3x



Note :

300 % = 300 / 100. but you wrote 400 / 100. Thus you got the wrong answer. Rest of the things are fine.
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Re: Which of the following expresses 25% less than 300% of x, if x is a po [#permalink]
11 Jul 2018, 19:08
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