Results 1 to 2 of 2

Math Help - Not sure which branch of mathematics my question relates to. Please help

  1. #1
    Newbie
    Joined
    Jun 2010
    Posts
    6

    Not sure which branch of mathematics my question relates to. Please help

    Hi,

    Four friends bought different kind of fruits from the market. When they got home they could not remember the individual prices per kilogram, but 3 if them can remember the total amount that they each paid. The weight of the fruits and the total amount paid are shown as the following:

    Pineapple (kgs) Mr A Mr B Mr C Mr D
    1.15 kgs 1.20 kgs 2.15 kgs 1.30 kgs


    Mangoes (kgs) Mr A Mr B Mr C Mr D
    0.60 kgs 0.45 kgs 0.90 kgs 0.25 kgs

    Orange (kgs) Mr A Mr B Mr C Mr D
    0.55 kgs 0.30 kgs 0.65 kgs 0.50 kgs


    Amount paid in ($) Mr A Mr B Mr C Mr D

    $8.28 $6.84 $13.05 $ ?

    Assuming that for each variety of fruit, the price per kilogram paid by each of the three friends is the same. Calculate the amount which Mr D paid.

    Please advise and thank you in advance for the effort
    Follow Math Help Forum on Facebook and Google+

  2. #2
    Member
    Joined
    Nov 2009
    Posts
    130
    x - cost of 1 kilo pinapple
    y - cost of 1 kilo mangoes
    z - cost of 1 kilo orange

    1.15*x+0.6*y+0.55*z=8.28
    1.20*x+0.45*y+0.3*z=6.84
    2.15*x+0.9*y+0.65*z=13.05

    Now solve the system and find x,y,z so you can calculate the amount which Mr D paid.
    Follow Math Help Forum on Facebook and Google+

Similar Math Help Forum Discussions

  1. Replies: 4
    Last Post: October 21st 2010, 08:41 AM
  2. Replies: 2
    Last Post: July 13th 2010, 05:11 AM
  3. Question regarding branch cuts of a function
    Posted in the Differential Geometry Forum
    Replies: 1
    Last Post: October 17th 2009, 09:20 AM
  4. Replies: 2
    Last Post: October 7th 2009, 09:56 PM
  5. Replies: 7
    Last Post: October 3rd 2009, 03:43 AM

Search Tags


/mathhelpforum @mathhelpforum