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At a certain high school, 40% of the students are boys

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by M7MBA » Mon Apr 15, 2019 1:30 am
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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%

[spoiler]OA=D[/spoiler]

Source: Veritas Prep
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by Scott@TargetTestPrep » Wed Apr 17, 2019 5:45 pm
M7MBA 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%

[spoiler]OA=D[/spoiler]

Source: Veritas Prep
If the total students = 100, 40 = boys and 60 = girls

We also know that 0.4 x 60 = 24 girls who take the bus, so 36 walk.

Additionally, we know that 20 boys walk and 20 take the bus.

Thus, the percent of students who walk is:

56/100 = 56%

Answer: D

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