Results 1 to 3 of 3

Math Help - word problem involving functions?

  1. #1
    Newbie
    Joined
    Jun 2010
    Posts
    2

    word problem involving functions?

    Harpreet travelled 112 km in the same time it took liam to travel 80 km. If harpreet's car travelled 18km/h faster that liam's, what was liam's speed?

    Can anyone help me out? I'm terrible with word problems.
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    Prove It's Avatar
    Joined
    Aug 2008
    Posts
    11,589
    Thanks
    1444
    You need to remember that

    D = TV.


    Liam: 80 = TV which means T = \frac{80}{V}.


    Harpreet: 112 = T(V + 18)

    112 = \frac{80}{V}(V + 18)

    112 = 80 + \frac{1440}{V}.


    Solve for V.
    Follow Math Help Forum on Facebook and Google+

  3. #3
    Newbie
    Joined
    Jun 2010
    Posts
    2
    thanks a bunch
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. word problem involving speed
    Posted in the Algebra Forum
    Replies: 1
    Last Post: September 28th 2008, 07:11 PM
  2. Word problem involving optimization
    Posted in the Calculus Forum
    Replies: 1
    Last Post: July 16th 2008, 07:37 PM
  3. word problem involving integrals
    Posted in the Calculus Forum
    Replies: 3
    Last Post: April 27th 2008, 03:09 PM
  4. Word Problem involving Integration
    Posted in the Calculus Forum
    Replies: 3
    Last Post: November 6th 2007, 01:05 PM
  5. word problem involving box
    Posted in the Geometry Forum
    Replies: 2
    Last Post: April 24th 2007, 05:05 AM

Search Tags


/mathhelpforum @mathhelpforum