SOLUTION: How much water must be evaporated from 80 pounds of a 12% solution of salt in order to obtain a 20% solution? Complete solution please, thank you!

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Question 1158867: How much water must be evaporated from 80 pounds of a 12% solution of salt in order to obtain a 20% solution?
Complete solution please, thank you!

Found 3 solutions by josgarithmetic, greenestamps, ikleyn:
Answer by josgarithmetic(39617)   (Show Source): You can put this solution on YOUR website!
If evaporating x pounds of water,











Answer by greenestamps(13200)   (Show Source): You can put this solution on YOUR website!


The amount of salt is 12% of 80 pounds, which is 9.6 pounds.

You want those 9.6 pounds to be 20% of the final solution:




The final solution needs to be 48 pounds; it originally was 80 pounds, so 32 pounds of water needs to be evaporated.


Answer by ikleyn(52786)   (Show Source): You can put this solution on YOUR website!
.

It was solved yesterday under this link

https://www.algebra.com/algebra/homework/word/mixtures/Mixture_Word_Problems.faq.question.1158751.html

https://www.algebra.com/algebra/homework/word/mixtures/Mixture_Word_Problems.faq.question.1158751.html



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