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# At a certain high school, 40% of the students are boys and 60% are gir

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Math Expert
Joined: 02 Sep 2009
Posts: 58404
At a certain high school, 40% of the students are boys and 60% are gir  [#permalink]

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06 Apr 2018, 04:46
00:00

Difficulty:

5% (low)

Question Stats:

88% (01:20) correct 12% (00:57) wrong based on 48 sessions

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At a certain high school, 40% of the students are boys and 60% are girls. Of the girls, 40% take the bus to school and the rest walk. Of the boys, half take the bus to school and half walk. What percent of all students at the high school walk to school?

A. 24%
B. 36%
C. 44%
D. 56%
E. 64%

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Intern
Joined: 16 Mar 2018
Posts: 46
Location: United Kingdom
GMAT 1: 650 Q45 V35
Re: At a certain high school, 40% of the students are boys and 60% are gir  [#permalink]

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06 Apr 2018, 04:58
Option D 56%
Making a simple 2X2 Matrix to solve for percentages involved.
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Re: At a certain high school, 40% of the students are boys and 60% are gir  [#permalink]

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07 Apr 2018, 02:42
Bunuel wrote:
At a certain high school, 40% of the students are boys and 60% are girls. Of the girls, 40% take the bus to school and the rest walk. Of the boys, half take the bus to school and half walk. What percent of all students at the high school walk to school?

A. 24%
B. 36%
C. 44%
D. 56%
E. 64%

Walking girls = 0.6 * 0.6 = 0.36

Walking boys = 0.4 * 0.5 =0.2

Total waking students = 0.56 =56%

Re: At a certain high school, 40% of the students are boys and 60% are gir   [#permalink] 07 Apr 2018, 02:42
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