SOLUTION: 50 ounces of pure orange juice are added to 200 ounces of a fruit punch that is 10% orange juice what is the percent concentration of orange juice in the mixture

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Question 793496: 50 ounces of pure orange juice are added to 200 ounces of a fruit punch that is 10% orange juice what is the percent concentration of orange juice in the mixture
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
Let +x+ = the percent concentration in the mixture
+.1%2A200+=+20+ ounces of pure orange juice in 10% mixture
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+%28+50+%2B+20+%29+%2F+%28+50+%2B+200+%29+=+x+
+70+%2F+250+=+x+
+x+=+7%2F25+
+x+=+.28+
+.28%2A100+=+28+
The percent concentration of
orange juice in the mixture is 28%