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-   -   Percentage of group (https://www.askmehelpdesk.com/showthread.php?t=66062)

  • Feb 24, 2007, 08:10 PM
    iam1to
    percentage of group
    if 10% of a group of people (number of people don't matter) has 1 thing in common and 11% of the same group of people has a different thing in common - what percent of the group has both things in common

    to sum it up - 10% has 1 thing in common
    11% has 1 thing in common
    what percentage has both in common?
  • Feb 24, 2007, 09:06 PM
    Capuchin
    I'm not going to e-mail you, but I will give the answer here.

    Assuming that both the 'things' are independent.

    10% have the first thing in common, and 11% will have the second thing in common.

    11% of the 10% will have both things in common

    So mathematically this is 0.10*0.11 will have both things in common.

    Hope this helps.
  • Feb 24, 2007, 09:31 PM
    letmetellu
    I am not positive if this is right but I came up with the answer of 90.90% have both things in common.

    I would like to know if this is or is not the right answer??
  • Feb 25, 2007, 04:16 AM
    Capuchin
    It isn't, the answer is 0.10*0.11 = 1.1% for the reasons I gave above.

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