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200 person have pager, cell phone or both. 80% have cell

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CEO
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Joined: 15 Aug 2003
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200 person have pager, cell phone or both. 80% have cell [#permalink] New post 17 Sep 2003, 08:15
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200 person have pager, cell phone or both. 80% have cell phones,
45% have pagers. How many percent person either no cell phone or no
pager?

is it 75%
Intern
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Joined: 11 Jul 2003
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 [#permalink] New post 17 Sep 2003, 11:00
This is incomplete info. You need the total population.
Manager
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missing info? [#permalink] New post 17 Sep 2003, 11:39
i think you need 1 more piece of information...
CEO
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Joined: 15 Aug 2003
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Kudos [?]: 670 [0], given: 781

Re: missing info? [#permalink] New post 17 Sep 2003, 21:29
guy123 wrote:
i think you need 1 more piece of information...



you already have the total population...200

nothing is missing
Intern
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 [#permalink] New post 18 Sep 2003, 18:16
it is 75% here is the solution

80% of 200= 160 Cell phone
45% of 200=90 Pager

200-160-90+both=0

So 50 is the both #

200-50=150 either does not have phone or pager
  [#permalink] 18 Sep 2003, 18:16
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200 person have pager, cell phone or both. 80% have cell

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