Question 341752
A solution is 30% chlorine and another solution is 70% chlorine. How many liters of each solution should you use to make 150 liters of a solution that is 55% chlorine? 
I wrote the equation like this:
.3x + .7(150-x)= .55(150) 
I broke this down to x=56.25 
56.25 Liters of 30% solution and 93.75 liters of 70% solution
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That is correct.
Cheers,
Stan H.