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A plant runs \( 20 \) hours a day for \( 90 \) days at \( 5.0 \) t/h. Its annual throughput is

  • A.450 tonnes
  • B.9000 tonnes
  • C.1800 tonnes
  • D.36500 tonnes

Answer: B

Correct answer: 9000 tonnes

\[ 5.0 \times 20 \times 90 = 9000\ \text{tonnes} \]

Note how short the operating year is - 1800 hours out of a possible 8000 - which is the seasonal plant’s central economic difficulty.

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