SOLUTION: A scientist mixes 200 mL of a solution that is 4% salt by weight with 300 mL of a solution that is 8% salt by weight. What percent salt is the resulting solution?

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Question 594542: A scientist mixes 200 mL of a solution that is 4% salt by weight with 300 mL of a solution that is 8% salt by weight. What percent salt is the resulting solution?
Answer by richwmiller(17219) About Me  (Show Source):
You can put this solution on YOUR website!
.04*200+.08*300=500*x
x=.064=6.4%