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If y > 0, (2y)/20 + (3y)/10 is what percent of y?

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Bunuel
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If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink] New post   07 Mar 2016, 09:18
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A
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If y > 0, (2y)/20 + (3y)/10 is what percent of y?

A. 40%
B. 50%
C. 60%
D. 70%
E. 80%
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A
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Re: If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink] New post   07 Mar 2016, 10:36
can be reduced to y/10+3y/10 =2y/5=40%
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Re: If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink] New post   02 Apr 2018, 14:14
Bunuel wrote:
If y > 0, (2y)/20 + (3y)/10 is what percent of y?

A. 40%
B. 50%
C. 60%
D. 70%
E. 80%



Let y = 20.........(2y)/20 + (3y)/10 = (2 *20)/20 + (3 * 20)/10 = 8

The 8/20 = 2/5 =0.4 = 40%

Answer: A
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Re: If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink] New post   03 Apr 2018, 05:32
Bunuel wrote:
If y > 0, (2y)/20 + (3y)/10 is what percent of y?

A. 40%
B. 50%
C. 60%
D. 70%
E. 80%


\(\frac{2y}{20} + \frac{3y}{10}\)

\(\frac{8y}{20}\)

\(\frac{2y}{5}* 100\)

\(40%\)

(A)
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If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink] New post   03 Apr 2018, 05:51
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Solution:



Approach and Working

To find, \(\frac{(2y)}{20} + \frac{(3y)}{10}\) is what percent of y, we first have to calculate the value of \(\frac{(2y)}{20} + \frac{(3y)}{10}\).
    • \(\frac{(2y)}{20} + \frac{(3y)}{10}\) = \(\frac{(2y+ 3y*2)}{20}\)
    • \(\frac{8y}{20}\)= \(\frac{2y}{5}\)

Now, we can easily find \(\frac{2y}{5}\) is what percentage of y.

• \(\frac{2y}{5} /y\) *100= 40%

Hence, the correct answer is option A.

Answer: A
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If y > 0, (2y)/20 + (3y)/10 is what percent of y? [#permalink]
03 Apr 2018, 05:51
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