Results 1 to 3 of 3

Math Help - Consecutive natural numbers

  1. #1
    Junior Member
    Joined
    Oct 2008
    Posts
    38
    Awards
    1

    Consecutive natural numbers

    The question is
    the sum of 3 consecutive natural numbers is 15 more than the greatest of them. What is the greatest of the three numbers?


    I was wondering if it was 7,8,9 or am I totally wrong? Thanks for reading!
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Nov 2008
    From
    Canada
    Posts
    86

    Smile

    Yes, I think they are 7,8,9
    We suppose that the numbers are
    a, a+1, a+2
    the greatest of them is a+2
    then
    a+a+1+a+2=15+a+2
    2a+1=15
    2a=14
    a=7
    Then the numbers are
    a=7
    a+1=8
    a+2=9
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Oct 2008
    Posts
    38
    Awards
    1

    Appreciate the answer.

    Thanks for taking the time to explain.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 3
    Last Post: September 23rd 2009, 12:04 PM
  2. Largest factor of consecutive natural numbers
    Posted in the Discrete Math Forum
    Replies: 3
    Last Post: September 8th 2009, 12:12 AM
  3. Replies: 2
    Last Post: April 30th 2009, 06:28 AM
  4. Consecutive numbers
    Posted in the Math Topics Forum
    Replies: 3
    Last Post: September 24th 2006, 03:57 PM
  5. consecutive numbers
    Posted in the Math Topics Forum
    Replies: 4
    Last Post: July 6th 2006, 02:02 PM

Search Tags


/mathhelpforum @mathhelpforum