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A kiln substitutes 30 per cent of its thermal energy with alternative fuel. If total input is 12 million megajoules a day, how much comes from alternative fuel?

  • A.3.6 million megajoules
  • B.360,000 megajoules
  • C.8.4 million megajoules
  • D.36 million megajoules

Answer: A

Thirty per cent of 12 million is 3.6 million megajoules. Substitution rates of this order are routine in Europe and considerably higher at some individual plants. A few kilns run almost entirely on wastes and secondary fuels.

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