• Translation Note: The names for “selling price” and “wholesale price” could be translated to normal local usage or applications, and similarly profit can be changed to a
  • Full Credit Code 1: Four correct responses: No, No, Yes, No, in that order. No Credit
    		•

    Formulae  Is the formula correct?




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    PISA 2012 items for release ENGLISH

    Formulae 
    Is the formula correct? 
    s
    =
    w
    +
    0.375
     
    Yes / No
    w
    =
    s
    –
    0.375
    s 
    Yes / No
    s
    =
    1.375
    w 
    Yes / No
    w = 
    0.625
    s 
    Yes / No
    Translation Note: The names for “selling price” and “wholesale price” could be 
    translated to normal local usage or applications, and similarly profit can be changed to a 
    related concept for a margin or changed appropriately to be a government or local tax. 
    The percent rate must not be changed from 37.5%, however. The formal writing of the 
    algebraic symbols and formulae should be maintained but can be adapted to local 
    conventions. The letters s and w can be adapted to the first letters of the translated 
    words. 
    MP3 PLAYERS SCORING 4 
    QUESTION INTENT: 
    Description: Decide which algebraic formula correctly connects two monetary 
    variables where one includes a fixed percentage margin 
    Mathematical content area: Change and relationships 
    Context: Occupational 
    Process: Formulate 
    Full Credit 
    Code 1: Four correct responses: No, No, Yes, No, in that order. 
    No Credit 
    Code 0: Other responses. 
    Code 9: Missing. 

    PISA 2012 Released Items 
    CHARTS 
    In January, the new CDs of the bands 
    4U2Rock 
    and 
    The Kicking Kangaroos 
    were 
    released. In February, the CDs of the bands 
    No One’s Darling 
    and 
    The Metalfolkies
    followed. The following graph shows the sales of the bands’ CDs from January to 
    June. 

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