Results 1 to 2 of 2

Math Help - Simultaneous Equations!

  1. #1
    Newbie
    Joined
    Feb 2010
    Posts
    1

    Simultaneous Equations!

    A piggy bank contains 67 coins. If there are only one and two dollar coins in the piggy bank, and there are 25 more one dollar coins than two dollar coins, how many of each type are there?

    Thankyouuuuuu in advance !
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,513
    Thanks
    1404
    Quote Originally Posted by geeorgiaaa View Post
    A piggy bank contains 67 coins. If there are only one and two dollar coins in the piggy bank, and there are 25 more one dollar coins than two dollar coins, how many of each type are there?

    Thankyouuuuuu in advance !
    Call the number of $1 coins x and the number of $2 coins y.


    You're told that there are 67 coins.

    So x + y = 67.


    You're also told that there are 25 more $1 coins than $2 coins.

    So x = y + 25.


    You can now substitute x from equation 2 into equation 1.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Simultaneous Equations 4 variables, 4 equations
    Posted in the Pre-Calculus Forum
    Replies: 3
    Last Post: December 7th 2011, 04:06 PM
  2. simultaneous equations
    Posted in the Algebra Forum
    Replies: 11
    Last Post: September 4th 2011, 06:54 AM
  3. Simultaneous equations
    Posted in the Algebra Forum
    Replies: 8
    Last Post: February 5th 2011, 10:41 AM
  4. Replies: 3
    Last Post: February 27th 2009, 07:05 PM
  5. simultaneous equations
    Posted in the Algebra Forum
    Replies: 1
    Last Post: November 18th 2007, 11:14 AM

Search Tags


/mathhelpforum @mathhelpforum