Results 1 to 4 of 4

Math Help - How to solve this question ?

  1. #1
    Member
    Joined
    Jun 2010
    Posts
    111

    How to solve this question ?

    A bus company charges $1.35 a kilometer to charter a bus which carries 54 children.How much should each child be charged if the distance to be covered is 50 km ?
    Follow Math Help Forum on Facebook and Google+

  2. #2
    MHF Contributor
    skeeter's Avatar
    Joined
    Jun 2008
    From
    North Texas
    Posts
    11,883
    Thanks
    672
    Quote Originally Posted by haftakhan View Post
    A bus company charges $1.35 a kilometer to charter a bus which carries 54 children.How much should each child be charged if the distance to be covered is 50 km ?
    charge per child = (cost per km)(distance in km)/(number of children)
    Follow Math Help Forum on Facebook and Google+

  3. #3
    MHF Contributor
    Joined
    Dec 2007
    From
    Ottawa, Canada
    Posts
    3,110
    Thanks
    68
    1.35 * 50 / 54
    Any reasons you're not able to do this?
    Follow Math Help Forum on Facebook and Google+

  4. #4
    MHF Contributor

    Joined
    Apr 2005
    Posts
    15,987
    Thanks
    1650
    Notice that the information you are given is "dollars per kilometer per bus" or \frac{dollars}{(kilometers)(buses), and "children per buses" or \frac{children}{buses} and that you are asked for "dollars per child" or \frac{dollars}{children}.

    Since you want "dollars" in the numerator, and it is already in the numerator of [tex]\frac{dollars}{(kilometers)(buses)}, so you want to multiply by that fraction. Also, you want "children" in the denominator, and it is in the numerator of \frac{children}{buses}, you want to divide by that fraction (to divide by a fraction you invert and multiply.

    Okay, just that would give you \frac{dollars}{(kilometers)(buses)}\frac{buses}{ch  ildren}. The "buses" in the numerator and denominator cancel leaving \frac{dollars}{(kilometers)(children)}. In order to get rid of the "kilometers" left in the denominator, we need to multiply by "kilometers".

    That is why everyone is telling you to multiply "1.35 dollars per kilometer per bus" by "50 kilometers" and divide by "children per bus".

    That is assuming that every bus is filled. other wise, we would need to know the precise number of children.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. ı can not solve the question
    Posted in the Statistics Forum
    Replies: 0
    Last Post: October 28th 2009, 04:47 AM
  2. How I can solve that question?
    Posted in the Algebra Forum
    Replies: 11
    Last Post: October 19th 2008, 04:50 AM
  3. please solve this question
    Posted in the Geometry Forum
    Replies: 1
    Last Post: October 8th 2008, 07:18 AM
  4. some one solve this question
    Posted in the Statistics Forum
    Replies: 0
    Last Post: March 10th 2008, 10:22 AM
  5. How should I solve this question?
    Posted in the Algebra Forum
    Replies: 4
    Last Post: October 18th 2006, 10:11 AM

Search Tags


/mathhelpforum @mathhelpforum