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There are two groups of students in the sixth grade

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There are two groups of students in the sixth grade  [#permalink]

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19 Dec 2018, 10:53
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Question Stats:

100% (00:54) correct 0% (00:00) wrong based on 13 sessions

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There are two groups of students in the sixth grade. There are 30 students in group A, and 50 students in group B. If, on a particular day, 20% of the students in group A forget their homework, and 12% of the students in group B forget their homework, then what percentage of the sixth graders forgot their homework?

A)13%
B)14%
C)15%
D)16%
E)17%

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Re: There are two groups of students in the sixth grade  [#permalink]

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19 Dec 2018, 12:41
On solving we get 6 from each group
Then,
6+6=12
12/80(total)*100
{For %}
You get 15%
According to me answer should be C-15%.

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Joined: 02 Sep 2009
Posts: 52285
Re: There are two groups of students in the sixth grade  [#permalink]

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19 Dec 2018, 20:20
Harshgmat wrote:
There are two groups of students in the sixth grade. There are 30 students in group A, and 50 students in group B. If, on a particular day, 20% of the students in group A forget their homework, and 12% of the students in group B forget their homework, then what percentage of the sixth graders forgot their homework?

A)13%
B)14%
C)15%
D)16%
E)17%

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Discussed here: https://gmatclub.com/forum/there-are-tw ... 73559.html

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Re: There are two groups of students in the sixth grade &nbs [#permalink] 19 Dec 2018, 20:20
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There are two groups of students in the sixth grade

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