Answer
$400$ mg
Work Step by Step
Given D=1000, A=8,
substitute and evaluate:
$\displaystyle \frac{1000(8)}{8+12}=\frac{1000(8)}{20}=$.... reduce by 20
$=\displaystyle \frac{50(8)}{1}$
= $400$ mg
You can help us out by revising, improving and updating this answer.
Update this answerAfter you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.