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A sugar mill crushes \( 3000 \) tonnes of cane a day and produces bagasse at \( 30 \) per cent of cane. The bagasse available is

  • A.900 tonnes per day
  • B.300 tonnes per day
  • C.90 tonnes per day
  • D.1000 tonnes per day

Answer: A

Correct answer: 900 tonnes per day

Apply the yield fraction to the cane crushed:

\[ 3000 \times 0.30 = 900\ \mathrm{tonnes\ per\ day} \]

Nine hundred tonnes a day is a very large quantity of fuel, and it is why a sugar mill is normally self-sufficient in steam and power - often with a surplus to export. It also explains why bagasse is burnt rather than converted to anything more elaborate: it arises in quantities the mill can use immediately, at the point where the energy is needed.

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