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Thread 'Potato paradox'

100 kg of potatoes consists of 99% water. After some water evaporates, the potatoes consist of 98% water. What is the new weight of the potatoes? The answer is 50 kg. The explanation is simple. 100 kg of potatoes consists of 99% water and 1% dry matter, so the weight of the dry matter is 1 kg. After some water evaporates, the potatoes consist of 98% water and 2% dry matter. The weight of the dry matter is still 1 kg, so 2% of the potatoes equals 1 kg. This means that 100% of the potatoes...
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