Results 1 to 3 of 3

Math Help - Population Growth

  1. #1
    Junior Member
    Joined
    Sep 2009
    From
    Russia
    Posts
    47

    Exclamation Population Growth

    The population of the world was approximately 6.3 billion in July 2003. Assuming that the population will grow by 2% each year, estimate the following.

    In what year will the population of the world double?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Master Of Puppets
    pickslides's Avatar
    Joined
    Sep 2008
    From
    Melbourne
    Posts
    5,236
    Thanks
    29
    The model you need is

    P = 6,300,000,000\times 1.02^t where P is population and t is years.

    You need to solve for t when P has doubled i.e. 12,600,000,000.

    So 12,600,000,000 = 6,300,000,000\times 1.02^t

    2 = 1.02^t Can you solve it from here?

    Spoiler:
    I get t = 35
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Junior Member
    Joined
    Sep 2009
    From
    Russia
    Posts
    47
    yep i got it! thanks!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Population Growth
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: May 19th 2009, 03:01 PM
  2. Population growth with non-constant growth factor
    Posted in the Differential Equations Forum
    Replies: 0
    Last Post: February 3rd 2009, 05:46 PM
  3. Population Growth
    Posted in the Calculus Forum
    Replies: 2
    Last Post: January 25th 2009, 02:09 PM
  4. Population Growth
    Posted in the Pre-Calculus Forum
    Replies: 2
    Last Post: August 14th 2008, 01:38 PM
  5. Population Growth
    Posted in the Discrete Math Forum
    Replies: 5
    Last Post: September 26th 2007, 01:59 PM

Search Tags


/mathhelpforum @mathhelpforum