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    4. Here are instructions for cooking a turkey

    - Cook for 15 minutes at 220 degrees
    - Reduce the oven temperature to 160 degrees
    - Then cook for 40 minutes per kilogram

    Kirsty has a 7 kilogram turkey.

    (a) show that it takes 4 hours and 55 minutes to cook

    I was wondering if you could help explain how to tackle this question at all? I would appreciate any help at all.

    English: Cook for 15 minutes then a further 40mins for every kg the turkey weighs, which is 7kg

    Maths: 15 + 40 x 7

    then convert minutes into hours and minutes
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Updated: July 26, 2009

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