SOLUTION: if an 8 ounce glass of orange juice has 72 milligrams of vitamin c how much vitamin c is in a 7ounce glass.

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Question 565829: if an 8 ounce glass of orange juice has 72 milligrams of vitamin c how much vitamin c is in a 7ounce glass.
Answer by ad_alta(240) About Me  (Show Source):
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Use a proportion: 8/72=7/x for 'x' the number of milligrams. We get x=63.