Results 1 to 3 of 3

Math Help - precentage change

  1. #1
    Member
    Joined
    Sep 2005
    Posts
    136

    precentage change

    how much smaller in percentage is 2.02 million square miles compared to 2.05 million square miles. Also what is the exact difference in square miles with no decimal points
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Grand Panjandrum
    Joined
    Nov 2005
    From
    someplace
    Posts
    14,972
    Thanks
    4
    Quote Originally Posted by bobby77 View Post
    how much smaller in percentage is 2.02 million square miles compared to 2.05 million square miles. Also what is the exact difference in square miles with no decimal points
    (2.02-2.05)/2.05 = -0.014634 or ~1.46% smaller

    The difference is 0.03 million square miles, which is 0.03x1000000 square miles=30000 square miles.

    RonL
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Sep 2007
    Posts
    20

    Smile How to solve percentage difference problems ...

    Quote Originally Posted by bobby77 View Post
    how much smaller in percentage is 2.02 million square miles compared to 2.05 million square miles. Also what is the exact difference in square miles with no decimal points
    % diff = (new_value - old_value)/old_value * 100 %

    new_value = 2.02 Million mi^2
    old_value = 2.05 Million mi^2

    % diff = (new_value - old_value)/old_value * 100 %

    % diff = (2.02 M - 2.05 M)/2.05 M * 100 % = -0.0146 * 100 % = -1.46%

    ( "-" indicates that it reduced, which makes sense, because 2.02 is smaller than 2.05)

    Hope this helps

    Mahurshi Akilla
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. precentage
    Posted in the Algebra Forum
    Replies: 1
    Last Post: June 10th 2008, 06:43 AM
  2. precentage equation
    Posted in the Algebra Forum
    Replies: 6
    Last Post: May 26th 2008, 08:02 PM
  3. precentage
    Posted in the Algebra Forum
    Replies: 2
    Last Post: May 18th 2008, 03:44 AM
  4. precentage
    Posted in the Algebra Forum
    Replies: 1
    Last Post: May 6th 2008, 03:32 PM
  5. repeating precentage
    Posted in the Algebra Forum
    Replies: 3
    Last Post: November 26th 2006, 06:51 PM

Search Tags


/mathhelpforum @mathhelpforum