SOLUTION: You mix 50 milligrams of a 7% saline solution with 30 milligrams of a 5% saline solution. About what percent of the mixture is salt?

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Question 875034: You mix 50 milligrams of a 7% saline solution with 30 milligrams of a 5% saline solution. About what percent of the mixture is salt?
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
50*7 + 30*5 = 80*(per cent) = amount of salt*100 in mg