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In a certain year, the number of girls who graduated

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In a certain year, the number of girls who graduated [#permalink] New post 27 Jun 2018, 11:33
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83% (00:48) correct 16% (00:00) wrong based on 6 sessions
In a certain year, the number of girls who graduated from City High School was twice the number of boys. If 3/4 of the girls and 5/6 of the boys went to college immediately after graduation, what fraction of the graduates that year went to college immediately after graduation


[Reveal] Spoiler: OA
\(\frac{7}{9}\)



Victory, Cambridge

Last edited by Carcass on 26 May 2019, 01:53, edited 2 times in total.
Edited by Carcass
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Re: Word Problem [#permalink] New post 27 Jun 2018, 13:03
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Quote:
what fraction go the graduates that year went to college immediately after graduation


I do think is of not go.....typo.

Pick a common number of boys and girls. The LCM of 4 and 6 = 24

Girls 48
Boys 24

After

Girls 36
Boys 20

\(56 = \frac{x}{100} 72
= 77.77 %\)

Please provide always the OA in spoiler.

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Re: Word Problem [#permalink] New post 26 May 2019, 01:29
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Menna wrote:
In a certain year, the number of girls who graduated from City High School was twice the number of boys. If 3/4 of the girls and 5/6 of the boys went to college immediately after graduation, what fraction of the graduates that year went to college immediately after graduation


Official Answer: 7/9


Victory, Cambridge


ANSWER.......
total no. of students = G + B
G = 2B
so, total students = 2B + B = 3B

Now, total graduates who went to college immediately = 3/4 of G + 5/6 of B
bla...bla....bla................................... = 3/4 of 2B + 5/6 of B
bla....bla...bla.................................... = 3/2 of B + 5/6 of B
bla....bla....bla................................... = 28/12 of B
i.e ...............................................= 28/36 of total students = 7/9 (Voila.....)
Re: Word Problem   [#permalink] 26 May 2019, 01:29
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In a certain year, the number of girls who graduated

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