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National Certificate of Competence for Workers in the Media and Food Industries 2013

Mathematics paper one: Basic burger mixing

Please read the paper.
Please answer all five questions.
You may use a calculator, a computer connected to the web or both. You may phone to consult a friend.

Q 1. A burger is made from a mixture of Irish beef and an imported filler material. The burger contains 29% horse meat. If the filler is not 100% horsemeat, what is the maximum Irish beef content of the burger?

Q 2. Burgers are made from a mixture of Irish beef and an imported filler material. If there is one kilo of Irish beef, what weight of filler material must be added in order to ensure that the burgers comprise 29% imported filler material?

Q 3. Burgers are made from a mixture of Irish beef and horsemeat. If there is one kilo of Irish beef, what weight of horsemeat must be added in order to ensure that the burgers comprise 29% horsemeat?

Q 4. Burgers are made from a mixture of Irish beef and an imported filler material. If one kilo of burger mix contains 71% Irish beef and 29% horsemeat, what proportion (percentage) of the filler material is horsemeat?

Q 5. “In mathematics and in the manufacture of burgers quantity is the property of magnitude involving comparability with other magnitudes.” Explain. (Your answer should make reference to the distinction between trace elements and ingredients.)

Good luck with that!

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