Discussion
Grain at \( 22 \) per cent wet basis is dried to \( 13 \) per cent. From \( 1000 \) kg, the water removed is
Answer: A
Dry matter is \( 780 \) kg, so the final wet mass is \( 780/0.87 = 896.6 \) kg and the water removed is \( 1000 - 896.6 = 103.4 \) kg. Subtracting the percentages to get 90 kg is the classic error and understates the duty.
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