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If a blended cement contains 65 per cent clinker and 35 per cent fly ash, how much clinker is in a 50 kg bag?

  • A.17.5 kg
  • B.50 kg
  • C.32.5 kg
  • D.35 kg

Answer: C

Sixty-five per cent of 50 kilograms is 32.5. Replacing clinker in this way is the most direct means of reducing the carbon dioxide associated with a tonne of cement. Every tonne of clinker not made saves roughly its own weight in emissions.

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