A tray separator handles1200 kg/h of paddy/brown rice. Paddy mass fractions in feed, separated-paddy outlet and brown-rice outlet are0.20,0.75,0.02. Find actual paddy in the separated-paddy stream in kg/h (two decimals).
Let separated-stream mass be S. Total and paddy balances give0.75S+0.02(1200−S)=0.20(1200), so S=216/0.73=295.890 kg/h. Paddy itself is0.75S=221.918 kg/h, or221.92; do not report the total stream mass.
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