Results 1 to 7 of 7
Like Tree1Thanks
  • 1 Post By skeeter

Math Help - money problem

  1. #1
    rcs
    rcs is offline
    Senior Member rcs's Avatar
    Joined
    Jul 2010
    From
    iligan city. Philippines
    Posts
    455
    Thanks
    2

    money problem

    Mr R coin bank consists of $10 bills and $5 bills only. if there 75 bills worth $ 450, how many $10 bills are there?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,929
    Thanks
    757

    Re: money problem

    Quote Originally Posted by rcs View Post
    Mr R coin bank consists of $10 bills and $5 bills only. if there 75 bills worth $ 450, how many $10 bills are there?
    x = number of $10 bills

    y = number of $5 bills

    now, you set up two equations from the given information ...
    Follow Math Help Forum on Facebook and Google+

  3. #3
    rcs
    rcs is offline
    Senior Member rcs's Avatar
    Joined
    Jul 2010
    From
    iligan city. Philippines
    Posts
    455
    Thanks
    2

    Re: money problem

    please correct me if im wrong:

    10x + 5y = 450
    75( x+ y) = 450
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,929
    Thanks
    757

    Re: money problem

    Quote Originally Posted by rcs View Post
    please correct me if im wrong:

    10x + 5y = 450 this equation is ok ...

    75( x+ y) = 450 this equation is incorrect ... x is the number of $10 bills , y is the number of $5 bills, the total number of bills is 75
    ... fix it.
    Follow Math Help Forum on Facebook and Google+

  5. #5
    rcs
    rcs is offline
    Senior Member rcs's Avatar
    Joined
    Jul 2010
    From
    iligan city. Philippines
    Posts
    455
    Thanks
    2

    Re: money problem

    Quote Originally Posted by skeeter View Post
    ... fix it.
    10x + 5y = 450
    x + y = 75
    Follow Math Help Forum on Facebook and Google+

  6. #6
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,929
    Thanks
    757

    Re: money problem

    Quote Originally Posted by rcs View Post
    10x + 5y = 450
    x + y = 75
    good ... solve the system.
    Thanks from rcs
    Follow Math Help Forum on Facebook and Google+

  7. #7
    rcs
    rcs is offline
    Senior Member rcs's Avatar
    Joined
    Jul 2010
    From
    iligan city. Philippines
    Posts
    455
    Thanks
    2

    Re: money problem

    Quote Originally Posted by skeeter View Post
    good ... solve the system.

    thank you skeeter great Mentor!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 5
    Last Post: January 5th 2011, 09:16 PM
  2. [SOLVED] Money box problem
    Posted in the Geometry Forum
    Replies: 7
    Last Post: July 15th 2010, 10:58 AM
  3. Money problem
    Posted in the Statistics Forum
    Replies: 6
    Last Post: January 11th 2009, 09:59 PM
  4. money problem
    Posted in the Algebra Forum
    Replies: 2
    Last Post: September 8th 2006, 02:35 AM
  5. [SOLVED] money,money,money...
    Posted in the Statistics Forum
    Replies: 2
    Last Post: May 17th 2006, 04:44 AM

Search Tags


/mathhelpforum @mathhelpforum