From 600 g of a 10% salt solution, it is necessary to prepare a 12% solution. To do this, you need to evaporate __ g of water

This solution contains:
600 * 0.1 = 60 g of salt and, accordingly, 540 g of water, we compose the proportion:
60 g – 12%
x g – 100%
x = 60 * 100/12 = 500 – then we need to evaporate 100 g of water
the answer is 100

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