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Stuck on a maths question...

  • 04-05-2012 5:15pm
    #1
    roberth
    Registered Users, Registered Users 2 Posts: 27 ✭


    I've been stuck on this question for ages, it's so basic but I am unaware of how to approach it. Help would be greatly appreciated! :D

    Q). An office has 1,104m(squared) of floor space. An extension increases the length by 2m, the width by 3m and the floor space of the office by 196m(squared). What are the dimensions of the original floor space?

    Thank you so much! :)


Comments

  • #2
    Eathrin
    Registered Users, Registered Users 2 Posts: 8,076 ✭✭✭Eathrin


    xy = 1104
    (x+2)(y+3) = 1300

    Solve from there should work I think.
    Use simultaneous equations and let y=1104/x


  • #3
    OldManJenkin
    Registered Users, Registered Users 2 Posts: 84 ✭✭OldManJenkin


    Set the width as x and the length as y.

    Then xy = 1104

    You also know that:

    (x+3)(y+2) = 1104 + 196

    Multiply the above out, put x in terms of y or vice versa and you'll get a not too nice quadratic which can be solved.


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