alleryFrom 50 kg of a 10% salt solution, how much water must evaporate to make it 20% salt?
A15 kg
B25 kg
C20 kg
D30 kg
Answer & Solution
Correct answer: B. 25 kg
Salt is 5 kg and must be 20% of the remainder, 25 kg, so 25 kg of water evaporates.
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