Advertisement
If you have a new account but are having problems posting or verifying your account, please email us on hello@boards.ie for help. Thanks :)
Hello all! Please ensure that you are posting a new thread or question in the appropriate forum. The Feedback forum is overwhelmed with questions that are having to be moved elsewhere. If you need help to verify your account contact hello@boards.ie

Maths (O) Paper One

Options
13»

Comments

  • Options
    #62
    Africa
    Registered Users Posts: 1,252 ✭✭✭Africa


    how did you manage that?


  • Options
    #63
    Creamy Goodness
    Registered Users Posts: 26,579 ✭✭✭✭Creamy Goodness


    <Jonny> wrote:
    Did anyone else get loads of decimals in the ratio question?

    Mine all totted up to 324.999999999999999999999999999999999999999999999999999999999999999999999999999

    instead of 325. What the hell.
    jonny, no I didn't get the decimals.

    this is how I done that question which I think worked out perfectly.

    1/3 : 1/3 : 1/4 use the common denominator - 12 - to get whole numbers so
    6/12 : 4/12 : 3/12 disregard the 12's so you get
    6 : 4 : 3 which add up to 13

    divide 325 by 13 = 25
    25 * 6 = 150 first portion
    25 * 4 = 100 second portion
    25 * 3 = 75 third portion

    to check the answer you add 150 + 100 + 75 = 325


  • Options
    #64
    Closed Accounts Posts: 311 ✭✭<Jonny>


    Well, I'll get most of the attempt marks. Damn.


  • Options
    #65
    Johnerr
    Registered Users Posts: 240 ✭✭Johnerr


    <Jonny> wrote:
    Did anyone else get loads of decimals in the ratio question?

    Mine all totted up to 324.999999999999999999999999999999999999999999999999999999999999999999999999999

    instead of 325. What the hell.

    yea i got that, tinks it's worng but, it still adds up to 325 so it's got to be right.


  • Options
    #66
    JohnCleary
    Registered Users Posts: 10,211 ✭✭✭✭JohnCleary


    cessy wrote:
    was the population ans not 52150 cuz it was a 16%inc so 16=8344 blah blah blah

    I hope so cause thats the answer I got!!


  • Advertisement
  • Options
    #67
    Cherry_Pie
    Closed Accounts Posts: 176 ✭✭Cherry_Pie


    I got 50,000 and redid it at home and its def 50,000!!


  • Options
    #68
    Cool_CM
    Registered Users Posts: 4,982 ✭✭✭Cool_CM


    JohnCleary wrote:
    I hope so cause thats the answer I got!!
    i did the same, unfortunately it looks like it was some wierd compound interest type question except with population.
    That paper was a c***, no 2 ways about it..........


  • Options
    #69
    Vikings
    Registered Users Posts: 2,788 ✭✭✭Vikings


    For that ratio one I messed it up to no ends. I never even noticed about the 12 lcm, and instead changed them to decimals, and multiplied by a hundred, got 50,33,25. Then they all added up to 325 (with some tinkering ;))


  • Options
    #70
    Petal
    Closed Accounts Posts: 166 ✭✭Petal


    I just realised I got question 2 part c right.. I think.. but for the love of god I can't remember how I did it.. Usually the way it goes in maths..


Advertisement