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A triaxial body is 50 per cent clay, 25 per cent feldspar and 25 per cent quartz. How much feldspar is in a 400 kg batch?

  • A.100 kg
  • B.200 kg
  • C.50 kg
  • D.25 kg

Answer: A

Twenty-five per cent of 400 kilograms is 100. Batch calculations of this kind are the daily arithmetic of a ceramic body shop and are usually done to the nearest kilogram. Recipes are normally written as percentages and scaled to the batch size.

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