The Vitamin C content claimed on the product label is that 1 cup of juice contains 130% of the recommended daily allowance (RDA) for vitamin C? Based on the product label claimed, how many milliliters of this juice must an adult drink to obtain the recommended daily allowance of vitamin C? The RDA for vitamin c varies with age, gender, and lifestyle, but for this calculation assume the RDA is 60 mg of vitamin C. Show your calculations.
A cup contains 130% vit C; how many mg is that? (x mg/60 mg)*100 = 130%. Solve for x and I get something like 78 mg vit C in a cup of the product. I think a cup is 8 oz; how many oz do we need to obtain 60 mg if the 8 oz cup contains 78 mg.
Wouldn't that be 8 oz x (60/78) = ?? or approximately 6 oz.
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To determine how many milliliters of juice an adult must drink to obtain the recommended daily allowance (RDA) of 60 mg of vitamin C, we can use a simple calculation based on the information provided.
First, let's find out what the RDA of vitamin C is based on the label claim. The label states that 1 cup of juice contains 130% of the RDA for vitamin C.
If we assume that the RDA is 60 mg, we can express 130% of 60 mg as:
130% * 60 mg = 0.13 * 60 mg = 7.8 mg
So, 1 cup of juice contains approximately 7.8 mg of vitamin C according to the label.
Now we need to find out how many milliliters of juice contain 60 mg of vitamin C. To do this, we can set up a proportion:
1 cup / 7.8 mg = X ml / 60 mg
Cross-multiplying, we get:
7.8 mg * X ml = 1 cup * 60 mg
7.8X = 60
To isolate X (the number of milliliters of juice), divide both sides of the equation by 7.8:
X = 60 / 7.8 ≈ 7.69 ml
So, an adult would need to drink approximately 7.69 milliliters of this juice to obtain the recommended daily allowance of 60 mg of vitamin C.