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Of the 200 students at College T majoring in one or more of

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Of the 200 students at College T majoring in one or more of [#permalink] New post 22 Sep 2008, 13:28
Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from:

A - 20-50
B - 40-70
C - 50-130
D - 110-130
E - 110 - 150
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Re: Venn Diagram? [#permalink] New post 22 Sep 2008, 14:11
snowbirdskier wrote:
Of the 200 students at College T majoring in one or more of the sciences, 130 are majoring in chemistry and 150 are majoring in biology. If at least 30 of the students are not majoring in either chemistry or biology, then the number of students majoring in both chemistry and biology could be any number from:

A - 20-50
B - 40-70
C - 50-130
D - 110-130
E - 110 - 150



200= 130+150 +30 -x

x= 110 ( mininum 110 )
max should be 130.. (which total number majoring in Chemistry)

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Re: Venn Diagram?   [#permalink] 22 Sep 2008, 14:11
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