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March 29, 2017

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a survey was made of 200 students to study their use of the public library. the findings were
60 used readers guide
28 used card cat and info booth
68 used info booth
83 did not use the library
43 used only the card cat
explain how the info can be used to conclude that some students must use both the info booth and readers guide

  • math - ,

    My, this is an old question! I haven't seen a card catalog for years!

    Only 117 used the library.
    Since 128 used both the readers' guide and info booth -- obviously some used both.

  • math - ,

    thank you so much!!

  • math - ,

    You're welcome.

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