Question 279720
In words:
(pounds of salt in final solution)/(pounds of salt + water in final solution) = 10%
Let {{{w}}} = pounds of water to be added
given:
The pounds of salt in final solution = {{{30*.15 = 4.5}}} pounds
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{{{4.5/(30 + w) = .1}}}
{{{4.5 = .1*(30 + w)}}}
{{{4.5 = 3 + .1w}}}
{{{.1w = 1.5}}}
{{{w = 15}}} pounds
If 1 pint = 1 pound, then 15 pints of water should be added