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What percent of water must be evaporated from a 4% salt solution so that it becomes 6% salt solution? Round your answer to the nearest hundredth.​

 Feb 13, 2021
 #1
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what is the amount of water

 Feb 13, 2021
 #2
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Do you mean How much water must be evaporated from 32 ounces of 4% salt solution to make a 6% salt solution?

QuestionMachine  Feb 13, 2021
 #3
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If you mean QM's question then the answer would be 10 2/3

 Feb 13, 2021
 #4
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to the nearest hundredth then it would be 10.67 

 Feb 13, 2021
 #5
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Pick an easy number ...10 ml of solution to start

salt in starting solution = salt in final solution

.04 (10) = .06 ( 10-x)        x is the amount to remove from the 10 ml

.4 = .6 - .06x

-.2 = - .06x

x = 3.33                        remove   3.333 ml from every 10 ml starting amount    3.3333/10 = 33 1/3 %

 Feb 13, 2021

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