Results 1 to 2 of 2

Thread: I hate word problems

  1. #1
    Nov 2006

    I hate word problems

    theres a rectangular box, where the material for the lid is 35 times more expensive per/m2 then the material for the rest of the box.The volume is 3m3. I need to find the dimentions for the minimum cost.

    I did a diagram. That's my speciality, but am stuck after that.(the blank page scares me).

    any aid would be terrific.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Eater of Worlds
    galactus's Avatar
    Jul 2006
    Chaneysville, PA
    Let x=length, y=width, z=heighth

    The volume is given by $\displaystyle xyz=3$

    The dimensions:



    sides: 2xz

    ends: 2yz

    Cost for all but top=c(xy+2yz+2xz)

    Cost for top=35c(xy)

    Total cost=35c(xy)+c(xy+2yz+2xz)

    Does this get you started?.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Problems with integration word problems
    Posted in the Calculus Forum
    Replies: 5
    Last Post: Apr 25th 2010, 05:39 PM
  2. Argh. I hate word problems. Help?
    Posted in the Pre-Calculus Forum
    Replies: 4
    Last Post: Dec 14th 2009, 07:10 PM
  3. I hate these problems
    Posted in the Algebra Forum
    Replies: 3
    Last Post: Jan 2nd 2009, 03:00 AM
  4. Replies: 3
    Last Post: Oct 2nd 2008, 07:09 PM
  5. I hate these problems..
    Posted in the Algebra Forum
    Replies: 21
    Last Post: Dec 25th 2007, 12:26 PM

Search Tags

/mathhelpforum @mathhelpforum