Discussion
A body is extruded at 22 per cent water and needs to be 24 per cent. How much water must be added to 500 kg of body, approximately?
Answer: C
Going from 22 to 24 per cent of the wet mass means the dry solids of about 390 kilograms must carry more water, and the addition works out near 13 kilograms. Working from the dry basis avoids the circularity of the wet one.
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