Results 1 to 3 of 3

Math Help - Word problem:

  1. #1
    Newbie
    Joined
    May 2007
    Posts
    19

    Word problem:

    I'm having difficulties setting this equation up. Can someone help me?

    Question:

    How many gallons of milk that is 10% butterfat must be added to 8 gallons of milk that is 35% butterfat to obtain milk that is 20% butterfat?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Super Member
    earboth's Avatar
    Joined
    Jan 2006
    From
    Germany
    Posts
    5,830
    Thanks
    123
    Quote Originally Posted by thumpin_termis View Post
    I'm having difficulties setting this equation up. Can someone help me?

    Question:

    How many gallons of milk that is 10% butterfat must be added to 8 gallons of milk that is 35% butterfat to obtain milk that is 20% butterfat?
    Hello,

    let x be the number of gallons of milk with 10% butterfat.
    For confirmation only: 10% = 0.1 and 35% = 0.35

    Then you know:

    0.1x + 0.35 \cdot 8 = 0.2(x+8)\ \Longleftrightarrow \ 0.1x + 2.8 = 0.2x + 1.6

    1.2 = 0.1x \Longleftrightarrow x = 12

    So you have to add 12 gallons of milk with 10% of butterfat.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    May 2007
    Posts
    19
    Wow, it just seems so easy once you explain it. Thanks a bunch!
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. word problem - the snow plough problem?
    Posted in the Differential Equations Forum
    Replies: 1
    Last Post: October 13th 2011, 01:02 PM
  2. Replies: 3
    Last Post: January 2nd 2011, 08:20 PM
  3. 1 Word problem and 1 function problem
    Posted in the Algebra Forum
    Replies: 8
    Last Post: April 21st 2010, 08:01 AM
  4. Replies: 2
    Last Post: January 10th 2009, 05:49 AM

Search Tags


/mathhelpforum @mathhelpforum