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26-08-2020
Mathematics

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A 20 pound mixture of salt water is 5% salt. How many pounds of water must be added to make it 3% salt?

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26-08-2020

Answer:

5 pounds

Step-by-step explanation:

(.15(20))/(20+w)=.12

3/(20+w)=.12

20+w=25

w=5

So 5 pounds of water must be added to the solution.

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