Question

There are 3.9 milligrams of calcium in a 1/2 ounce of cooked chicken. how many milligrams are in 6 ounces

Answer 1

First....6÷1/2= 12
so.....12*3.9=46.8 milligram

Answer 2

The answer is:  46.8 mg .
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         There are 46.8 mg of calcium in  6 oz. of cooked chicken.
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Explanation:  To solve:
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(3.9 mg Ca) / (0.5 oz chicken) = ( "x" mg Ca) / 6 oz cooked chicken ; 
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  Find "x" (in "mg", or "milligrams").
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    →  (3.9)/(0.5) = x/ 6
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  → (0.5)x = (3.9) * (6) ;
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  → (0.5) x = 23.4 ;
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  →  Now, divide EACH side of the equation by "(0.5)", to isolate "x" on one side of the equation; and to solve for x:
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  → (0.5) x / (0.5) = 23.4 / (0.5) ;
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  →       x =  46.8 mg Ca____________________________