A chemist mixes one liter of pure water with x liters of a 75% salt solution, and the resulting mixture is a 15% salt solution. What is the value of x?  Choose the correct choice from the following choices
A) 1/4
B) 1/3
C) 1/2
D) 1
E) 3
Concentration of salt in pure solution = 0   Concentration of salt in salt solution = 75%   Concentration of salt in the mixed solution = 15%   The pure solution and the salt solution is mixed in the ratio of --&gt; (75 - 15)/(15 - 0) = 4/1   1/x --  (75 - 15)/(15 - 0)= 
<gadget id="calculator">--  (75 - 15)/(15 - 0)</gadget>
<output>4</output>
4/1   1/x= 4/1   x = 1/4   1/4nswer: 1/4
<result>A</result>
A chemist mixes one liter of pure water with x liters of a 75% salt solution, and the resulting mixture is a 15% salt solution. What is the value of x?